Half-round massage bolsters & stable knee rolls

Half-Round Massage Bolsters UK – Semi-Round Knee Rolls for Stable Positioning

Q: Why choose half-round instead of round?

Choose half-round when the support should stay in place and should not roll. Choose round when more lift or more versatile positioning is needed.

Shop half-round massage bolsters, semi-round knee rolls, stable positioning cushions, lumbar support bolsters, ankle supports and therapy positioning rolls for massage tables, treatment couches, physiotherapy and professional bodywork.

A half-round bolster gives stable support because the flat underside helps the cushion stay in place. It is especially useful under the knees in supine position, under ankles or lower legs, and for gentle lower-back or lumbar comfort during longer treatments.

Flat base for stability
Ideal knee support
Lumbar & ankle positioning
Prices incl. VAT

Half-round guide → Back to bolsters hub →

Choose half-round bolsters when stability matters more than maximum lift

Stay on this page for stable semi-round supports. Use round bolsters when more height and versatility are needed, and use face cushions when prone face comfort is the real issue.

Stable support route

Stable support Need knee support? Use a half-round bolster under the knees when the support should stay in place. View guide More lift Need a round bolster? Choose round bolsters when more height and versatile ankle or knee support are useful. View round Side-lying Need pregnancy support? Use pregnancy supports for side-lying positioning where available. View pregnancy Face comfort Need face pressure relief? Choose face cushions when prone face comfort, breathing space or pressure relief matter. View face cushions Protection Need covers? Use covers and hygiene layers to protect bolsters, cushions and treatment surfaces. View covers

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

Half-round bolster guide

When should you choose a half-round massage bolster?

A half-round bolster is the right shape when stable support matters. The flat base helps prevent rolling, making it especially useful for knee support, lower-back comfort, ankle positioning and predictable table setup during professional treatments.

Best first choice

Stable knee support

Best when clients need the knees slightly raised while lying on their back.

Best for

Supine treatments, lower-back relief, hip relaxation and longer massage sessions.

Look for

Correct height, stable flat base, supportive foam and easy-clean upholstery.

Check

The knees should feel gently supported, not forced too high or over-bent.

View fit advice

Lower profile

Lumbar & lower-back comfort

Best when clients feel tension in the lower back while lying flat.

Best for

Lower-back comfort, gentle positioning and clients who dislike high round bolsters.

Look for

A moderate height, smooth seams, supportive foam and a stable base that stays in place.

Check

For lumbar use, small changes in placement can make a large comfort difference.

View all supports

Prone position

Ankle & lower-leg support

Best when a lower, stable support is needed under the ankles or lower legs.

Best for

Prone treatments, ankle support, lower-leg comfort and reduced movement during treatment.

Look for

Enough length, comfortable support height, wipe-clean surface and non-rolling base.

Check

If more lift is needed under the ankles, a round bolster may be the better shape.

Compare round bolsters

Shape decision

Half-round vs round bolster

Best to decide before buying: half-round gives stability; round gives more lift.

Half-round

Flat base, more predictable placement and usually better for stable knee support.

Round

More lift, more versatile, useful under ankles, knees and lower legs.

Check

Choose by body area, support height and whether rolling would be a problem.

View round bolsters

Practical rule: Choose a half-round massage bolster when stability matters. Choose a round bolster when you need more lift or a more versatile positioning roll.

Buying guidance

How to choose a half-round massage bolster

A half-round massage bolster is also searched as a semi-round bolster, semi-round knee roll, stable positioning roll, lumbar support cushion, ankle support bolster or therapy positioning cushion. Its main role is to give stable support without rolling. Choose by height, length, foam firmness, upholstery material, cleaning routine and the body area you support most often.

Good fit

When a half-round bolster is the right choice

Half-round bolsters are useful when the support should stay predictable during the whole treatment.

You need stable knee support while the client lies on their back.
You want the bolster to stay in place without rolling.
You need moderate support under ankles, lower legs or lumbar area.
You treat clients who are sensitive to support height or movement.
You want a wipe-clean support cushion for regular professional use.

Wrong fit

When another support may be better

Half-round is stable, but not always the best shape if more lift or more flexible positioning is needed.

Choose a round bolster if you need more height under ankles or lower legs.
Choose a face cushion if prone face pressure is the real issue.
Choose pregnancy supports for side-lying pregnancy massage positioning.
Choose couch covers if the problem is hygiene or surface protection.
Choose a lower or softer support if the bolster creates too much bend at the knees.

Positioning tip

Place the flat side down for predictable knee support

The biggest advantage of a half-round bolster is the flat base. Place the flat side on the couch and position the rounded side under the knees, ankles or lower legs. The support should reduce strain without forcing the joints into an uncomfortable angle.

Round bolsters Face cradle cushions Portable massage tables Stationary treatment couches

Care routine

Oil-resistant PU upholstery is practical for daily use

For professional treatment rooms, wipe-clean PU upholstery is usually practical because bolsters are handled frequently and often used close to oils, lotions and couch covers. Check the product care instructions, remove residue after use and avoid harsh cleaning products that could damage the surface.

Oil-resistant covers Reusable face pillow covers Hygiene essentials All bolsters & cushions

FAQs

Half-Round Massage Bolsters & Semi-Round Knee Rolls – FAQs

What is a half-round massage bolster used for?

A half-round massage bolster is used to support knees, ankles, lower legs, lower back or lumbar area during treatment. Its flat base helps it stay stable on the massage table.

Is a half-round bolster the same as a semi-round knee roll?

Yes. In practice, half-round bolster, semi-round bolster and semi-round knee roll are often used for the same type of stable support cushion.

Why choose half-round instead of round?

Choose half-round when you want the support to stay in place and not roll. Choose round when you need more lift or more versatile positioning.

Which half-round bolster size should I choose?

Choose by support height and body area. A lower support is usually gentler under the knees or lumbar area, while a larger semi-round bolster gives more lift and broader support.

Can half-round bolsters be used under the ankles?

Yes. A half-round bolster can support ankles or lower legs in prone position when a stable, lower-height support is preferred.

Are PU-covered half-round bolsters easy to clean?

PU-covered half-round bolsters are practical for wipe-down routines in professional treatment rooms. Always follow the product care instructions, especially after oil or lotion use.

Still unsure whether half-round is the right shape?

Choose a half-round bolster for stable knee, ankle or lumbar support. Choose a round bolster if you need more height, more lift or a more versatile positioning roll.

Compare round bolsters Back to bolsters hub