Improves sitting for long time
1st days' impressions---will update if rating needs changing or cushions' characteristics change my review/ Packaged in plastic zip bag (like a clothes hamper bag !). Quality zipped seat cushion bag --cloth side up, ribbed side down, with no slipping on my office chair. Original chair well cushioned, but this added Ultimate cushion adds more comfort, for sure. At my 200 pounds, this Ultimate cushion provides enough &#34;softness&#34;, is correct size for my large frame, and notice no heat building up. Seat cushion conforms to slight middle dip of the chair padding, and retains cushion thickness, after getting up. No sliding forward or around, and a decent cushion weight keeps it in place all the time. If I rock to both chair sides, I feel the cushion compressing around its' edges. Cushion cover is non-slip on bottom, and a 1&#34; square SAMPLE of the inside blue lattice-work material, that buckles when pressed. This demonstrates how the air between the lattice squares, allows compression where needed. AGAIN--great QUALITY !  and MADE IN UTAH..U.S.A.  /  The principle of compressing the air-filled lattice work, should be progressively softer with lighter weight......I'd say over 220 pounds is the effective limit for the Ultimate. Price seems a lot, but there's a few reasons, making it a good buy. At the least, sitting has improved, with this cushion. Remove cushion cover to launder in cold water, then tumble in low heat. (The sample of the lattice inside, reminds me of the chex cereal design.) UPDATE 6/27/2014 --Still works like brand new----does not flatten out after use...returns to full thickness.  /  Because of how I sit and move a lot in chair, pad does slip forward sometimes, but hey, SLIDE IT BACK ! / note..front of pad had strap to carry or move it by --- each side of cushion is slightly different, whichever you like facing up. A good investment for those who sit. UPDATE UPDATE; a BIT UNDER SIZE TO COVER MY OFFICE CHAIR SEAT. Would be better for smaller people, but it's heavier people like me, need it most. Well, better than NO cushion. UPDATE 2/2/2017  still like new.
Rating: 4 stars