Groundwork Supply Review: Zabuton Mats and Support Sets Tested

If you have ever sat on a hardwood floor for twenty minutes, you know what a zabuton is for. It is the flat, rectangular mat that goes under your cushion, and it takes the pressure off your ankles, shins and knees. A good one turns a punishing floor into somewhere you can happily stay.

A bad one is a thin square of foam in a shiny cover that flattens in a month. Because the difference is invisible online, we ordered from Groundwork Supply, a store that specialises in floor comfort for meditation and yoga, and put its products through eight weeks of daily use.

What Groundwork sells#

The core range is three mats: the Essential zabuton (70 × 70 cm, cotton cover, $54), the Studio (80 × 80 cm, thicker with a non-slip base, $89) and the Retreat (90 × 90 cm with a quilted top and carry handles, $124). There are matching round cushions and a few bundles. The best-value set pairs a Studio mat with a buckwheat cushion for $148, and a full retreat set costs $198.

Each product page states the mat's dimensions, thickness, weight and fill. The mats use a mix of kapok and cotton batting, which is unusual and, as we found, works well.

How we tested#

I bought the Essential mat ($54) and the Studio-and-cushion bundle ($148). Over eight weeks I sat on both daily, on hardwood, tile and a low-pile carpet. I also:

• Measured thickness on day one, day 28 and day 56 with a ruler under a flat board.

• Washed the covers twice on a cold cycle.

• Checked slip resistance by sitting and shifting on a polished floor.

• Contacted support twice and returned the Essential mat on day 27.

Comfort and support#

The Studio mat is the one to buy. At 4 cm thick it absorbed enough pressure that I stopped noticing my ankles, and the non-slip base kept the whole set stable on polished wood, which is where many cheaper zabutons skate. After eight weeks it had lost roughly 4 mm of loft, which is normal for kapok and still comfortable.

The thinner Essential mat is fine on carpet but disappointing on hard floors. At 2.5 cm it compressed to about 1.6 cm by day 28, and I felt the boards through it. For daily sitters on tile or hardwood, we would skip it.

Cover quality#

The Studio and Retreat covers are heavy cotton canvas with a hidden zipper and tightly finished seams, and they came through two cold washes with no visible fading. The Essential cover is a lighter weave, and after the second wash the dark grey colour had faded to a tired charcoal. It is a small complaint, but it feels like a corner cut.

The bulk problem#

Zabutons are big. The Studio mat is 80 cm across and weighs 3.6 kg, which makes it a poor choice if you carry your kit to class. The Retreat mat adds carry handles, but at 5 kg it still feels like luggage. If you meditate in a small flat, factor in storage: leaning it upright behind a door works, but it will not disappear into a drawer.

Shipping, service and returns#

Standard parcels arrived within four days, but the Studio mat counts as oversized and costs an extra $18 to ship unless the order is above $150. That is fair for the weight, though it surprised me at checkout.

Support was polite and quick. I asked whether the non-slip base would damage a waxed wood floor, and a reply the next morning recommended a thin cloth underlay for the first week and linked to care advice. The Essential mat's return was straightforward within 30 days, with a prepaid label because I gave "too thin" as the reason, a courtesy not all stores offer.

Price and value#

At $89 for the Studio mat, Groundwork is competitive with specialist brands that charge $95 to $120 for similar dimensions. Its bundles are genuinely good value: the $148 mat-and-cushion set costs $22 less than buying them separately. The Essential mat at $54 is the weak link.

Who should buy, and who should skip#

Buy from Groundwork Supply if you sit on hard floors, want reliable support under a cushion or teach classes and need a good, robust mat.

Skip it if you sit on a bed or carpet (a folded blanket does the same job), you travel with your gear or space is very tight.

Pairing the Studio mat with the adjustable cushion from our Stillwater Goods review makes an excellent home setup.

The verdict#

Groundwork Supply earns 4.0 out of 5. The Studio mat is comfortable, stable and well made, and the bundles are a good deal. The thin Essential mat, the fading cover and the oversized shipping fee keep it from a higher score.

Disclosure: we bought all products ourselves. Some links on this site are affiliate links. See our review policy.