Half-Round Massage Bolster (Knee Support & Positioning Roll)

Q: How do I choose the right size?

Choose based on the height you want under the knees and confirm measurements on the product page for compatibility.

A half-round massage bolster — sometimes searched as a knee roll or positioning roll — is designed to support comfortable alignment during massage and physiotherapy. The key advantage over a round bolster is stability: the flat underside helps it stay in place and prevents rolling.

The most common use is knee support in supine position. By keeping the knees slightly bent, many clients feel less pull through the hips and lower back, making it easier to relax during longer treatments.

Anti-roll stability: flat underside stays in place
Best for knees: consistent support in supine treatments
Practice-ready: wipeable or washable covers depending on model

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3 Products

8.36

LARGE Semi-Round Bolster | knee roll (oilresistant)

LARGE semi-round positioning roll for excellent support > with PU-upholstery which is water- and oilresistant > available in 3 colors

Available, delivery time: 1-2 days

£32.90 £35.90

Details

11.58

Semi-Round Bolster | Standard Size

Standard Sized semi-round bolster with PU-Upholstery, which water- and oilresistant. With 7,6 cm height it provides a gentle support.

Available, delivery time: 1-2 days

£22.90 £25.90

Details

16.91

3/4 knee roll - three-quarter roll with PU cover (oil-resistant)

This three-quarter roll - 3/4 knee roll / neck roll with silky soft, easy-to-clean PU cover with high-quality foam filling offers your clients the best comfort and support.

Available, delivery time: 1-2 days

£29.00 £34.90

Details

Why therapists choose half-round bolsters

Half-round bolsters are used to support comfortable posture in massage and therapy, especially where you want the bolster to stay put. The flat base reduces movement and makes positioning more predictable during client repositioning.

If your main goal is reliable knee support, a half-round is often the best first choice — it provides stable height and helps clients relax faster.

Buying checklist

Size & height: choose the height that supports knees without over-bending.
Firmness: supportive enough to hold shape under load.
Cover material: wipeable for fast resets or washable for routine rotation.
Client feel: smooth seams and soft fabrics improve perceived quality.

HowTo: Use a half-round bolster for stable knee support

Supine setup: place the flat side down so the bolster won’t roll.
Position under knees: support both knees evenly for a slight bend.
Check lower back comfort: the pelvis should feel settled and relaxed.
Stability check: apply light pressure to confirm it stays in place.
Reset: wipe down or change covers according to your hygiene routine.

Half-Round Bolster FAQ

Is a half-round bolster better than a round bolster?

For stability, often yes. Half-round bolsters don’t roll and are popular for knee support. Round bolsters can be more versatile for other placements.

What is the best use for a half-round bolster?

The most common use is under the knees in supine position to reduce lower-back tension and improve comfort.

How do I choose the right size?

Choose based on your couch size and the height you want under the knees. Product pages typically list measurements for compatibility.

Compare positioning options

→ Round bolsters (knee rolls)
https://massage-planet.co.uk/massage-accessories/bolsters-cushions/round-bolster/

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https://massage-planet.co.uk/massage-accessories/bolsters-cushions/