Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.
    Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
    Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
    Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
    Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
    Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.
Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.
Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.
    Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
    Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
    Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
    Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
    Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.
Sitmatic CoolLean ergonomic perch stool in gray fabric, front view showing the curved backrest, contoured seat, and five-star caster base.
Sitmatic CoolLean ergonomic perch stool shown from the side with a manufacturer tag hanging from the seat, illustrating the reclined backrest angle and adjustable height mechanism.
Man in dark clothing demonstrating the Sitmatic CoolLean perch stool in a leaning-forward standing-desk posture, side view showing the seat's forward tilt.
Sitmatic CoolLean ergonomic perch stool viewed from the rear, showing the backrest support column, seat underside, and rolling caster base with hang tag.
Sitmatic CoolLean ergonomic perch stool in gray fabric, straight-on front view emphasizing the sculpted seat pan and curved backrest shape.

About

View Our Chair Fitting Form - Click Here

Stand comfortably all day with active support — the Sitmatic CoolLean is the modern ergonomic perch stool designed to reduce standing fatigue, improve posture, and support healthy movement at standing desks. Trusted by ergonomic specialists, this innovative perch seat lets you alternate between standing and supported sitting, giving your legs relief while maintaining an active, engaged posture.

Why You'll Love It:

  • Reduces standing fatigue and leg pain — Provides partial weight support while maintaining an upright posture, allowing you to stand longer without the exhaustion and discomfort of prolonged standing
  • Perfect for standing desk users — Designed specifically for sit-stand workstations, enabling you to perch comfortably at standing height without fully sitting down
  • Promotes active sitting and movement — Encourages micro-movements and core engagement, keeping your body active and energized rather than static and sedentary
  • Improves posture and spinal alignment — Tilted seat design naturally positions your pelvis forward, aligning your spine and reducing lower back strain
  • Sleek, modern design fits any workspace — Contemporary aesthetics and compact footprint complement modern offices without cluttering your workspace

Dimensions:

  • Model# COL12ST (Smaller Seat): Seat height 16¾"–23½" | Seat Pan: 19"W x 18"D | Backrest: 19"W x 15"H
  • Model# COL12ST (Standard Seat): Seat height 16¾"–23½" | Seat Pan: 21"W x 19"D | Backrest: 19"W x 15"H

Specifications:

  • Type: Ergonomic perch stool for standing desks
  • Height adjustment: Adjustable to accommodate various standing desk heights
  • Seat design: Tilted perch seat for active sitting posture
  • Construction: Durable materials for daily use
  • Ideal for: Standing desk users, sit-stand workstations, active work environments
  • Manufacturer: Sitmatic (ergonomic seating specialists)

Backed by 30+ years of ergonomic expertise, Ask Ergo Works recommends the Sitmatic CoolLean for standing desk users who experience leg fatigue, people transitioning to standing desks, and anyone seeking to add movement and variety to their workday.

Perfect for:

  • Standing desk and sit-stand workstation users
  • People experiencing leg fatigue or foot pain from prolonged standing
  • Workers transitioning from sitting to standing desks
  • Active professionals who want movement throughout the day
  • Modern offices and home workspaces

Free shipping included. Expert ergonomic guidance provided.

⚠️ Made-to-Order: Each chair is made-to-order based on your selections to ensure the best fit and performance. Because of this, orders are final—but we're here to help you get it right.

View Our Chair Fitting Form - Click Here

Stand comfortably all day with active support — the Sitmatic CoolLean is the modern ergonomic perch stool designed to reduce standing fatigue, improve posture, and support healthy movement at standing desks. Trusted by ergonomic specialists, this innovative perch seat lets you alternate between standing and supported sitting, giving your legs relief while maintaining an active, engaged posture.

Why You'll Love It:

  • Reduces standing fatigue and leg pain — Provides partial weight support while maintaining an upright posture, allowing you to stand longer without the exhaustion and discomfort of prolonged standing
  • Perfect for standing desk users — Designed specifically for sit-stand workstations, enabling you to perch comfortably at standing height without fully sitting down
  • Promotes active sitting and movement — Encourages micro-movements and core engagement, keeping your body active and energized rather than static and sedentary
  • Improves posture and spinal alignment — Tilted seat design naturally positions your pelvis forward, aligning your spine and reducing lower back strain
  • Sleek, modern design fits any workspace — Contemporary aesthetics and compact footprint complement modern offices without cluttering your workspace

Dimensions:

  • Model# COL12ST (Smaller Seat): Seat height 16¾"–23½" | Seat Pan: 19"W x 18"D | Backrest: 19"W x 15"H
  • Model# COL12ST (Standard Seat): Seat height 16¾"–23½" | Seat Pan: 21"W x 19"D | Backrest: 19"W x 15"H

Specifications:

  • Type: Ergonomic perch stool for standing desks
  • Height adjustment: Adjustable to accommodate various standing desk heights
  • Seat design: Tilted perch seat for active sitting posture
  • Construction: Durable materials for daily use
  • Ideal for: Standing desk users, sit-stand workstations, active work environments
  • Manufacturer: Sitmatic (ergonomic seating specialists)

Backed by 30+ years of ergonomic expertise, Ask Ergo Works recommends the Sitmatic CoolLean for standing desk users who experience leg fatigue, people transitioning to standing desks, and anyone seeking to add movement and variety to their workday.

Perfect for:

  • Standing desk and sit-stand workstation users
  • People experiencing leg fatigue or foot pain from prolonged standing
  • Workers transitioning from sitting to standing desks
  • Active professionals who want movement throughout the day
  • Modern offices and home workspaces

Free shipping included. Expert ergonomic guidance provided.

⚠️ Made-to-Order: Each chair is made-to-order based on your selections to ensure the best fit and performance. Because of this, orders are final—but we're here to help you get it right.

Sitmatic by Sitmatic

5.0

Sitmatic CoolLean Ergonomic Perch Stool for Standing Desks

COL13STSD

$890.50
$890.50
Stand comfortably all day with active support — the Sitmatic CoolLean is the modern ergonomic perch stool built to reduce standi...  Read more
Stand comfortably all day with active support — the Sitmatic CoolLean is the modern ergonomic perch stool built to reduce standing fatigue, improve posture, and support healthy movement at standing desks. Recommended by ergonomic specialists, this well-designed perch seat lets you alternate between standing and supported sitting, giving your legs relief while maintaining an active, engaged posture. Perfect for standing desk users — Made specifically for sit-stand workstations, enabling you to perch comfortably at standing height without fully sitting down.
Seat Size:

Not sure this is the right fit?

Our certified specialists can evaluate your workstation and recommend the right setup for you.

Request an Ergonomic Evaluation →
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FAQs About the Sitmatic CoolLean Perch Stool

1

Who is the Sitmatic CoolLean Perch Stool designed for?

The Sitmatic CoolLean is designed for people who use standing desks or sit-stand workstations and experience fatigue from prolonged standing. It's meant for users who want to alternate between fully standing and a supported, active-sitting posture rather than sitting down completely.

2

How does the Sitmatic CoolLean Perch Stool help reduce standing fatigue?

The Sitmatic CoolLean provides partial weight support while you remain in a mostly upright posture, which is designed to let you stand for longer periods without the full exhaustion of standing unsupported. It's intended as a comfort aid for active standing rather than a substitute for taking seated breaks.

3

What height range does the Sitmatic CoolLean Perch Stool adjust to?

The Sitmatic CoolLean adjusts through a seat height range of 16¾" to 23½", intended to accommodate a variety of standing desk heights. This range lets you position the perch seat to match your desk's standing height setting.

4

How does the tilted seat on the Sitmatic CoolLean Perch Stool affect posture?

The Sitmatic CoolLean uses a tilted perch seat that's designed to angle your pelvis slightly forward, which is intended to support a more neutral spine alignment and reduce lower-back strain compared to leaning on an unsupported flat surface. This tilt is part of what distinguishes a perch stool from a standard stool or chair seat.

5

What seat sizes are available for the Sitmatic CoolLean Perch Stool?

The Sitmatic CoolLean is available in a smaller seat pan measuring 19" W x 18" D and a standard seat pan measuring 21" W x 19" D, both with a 19" W x 15" H backrest and the same 16¾"–23½" height range. Choosing between them mainly comes down to your preferred seat surface area rather than a difference in height adjustment.

6

Is the Sitmatic CoolLean Perch Stool made to order?

Yes, the Sitmatic CoolLean is made to order based on the configuration you select, which means orders are final once placed. Ask Ergo Works recommends confirming your seat size and configuration using the Chair Fitting Form or with a specialist before ordering.

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