https://aylio.com/learn/ Plain-language guides on sit-bone pain, anatomy and cushion geometry. en-us https://aylio.com/learn/how-far-apart-are-sit-bones/ https://aylio.com/learn/how-far-apart-are-sit-bones/ Published measurements put adult sit bones 100–155 mm apart (4–6 in), wider in women and wider when you recline. What that means for a cutout cushion. Thu, 03 Sep 2026 00:00:00 +0000 https://aylio.com/learn/coccyx-cushion-vs-socket-seat/ https://aylio.com/learn/coccyx-cushion-vs-socket-seat/ Aylio makes both a U-cutout coccyx cushion and the twin-cutout Socket Seat. The honest decision rule between them, from the company that sells both. Sun, 30 Aug 2026 00:00:00 +0000 https://aylio.com/learn/seat-cushion-or-new-chair/ https://aylio.com/learn/seat-cushion-or-new-chair/ One costs several times the other, and the cheaper one is sometimes the wrong answer. How to tell whether your chair or your cushion is the real problem. Sun, 30 Aug 2026 00:00:00 +0000 https://aylio.com/learn/wedge-vs-cutout-seat-cushion/ https://aylio.com/learn/wedge-vs-cutout-seat-cushion/ A wedge changes your sitting angle; a cutout removes pressure from specific points. Which job your pain is actually asking for, and when you want both. Sun, 30 Aug 2026 00:00:00 +0000 https://aylio.com/learn/hip-bursitis-seat-cushion/ https://aylio.com/learn/hip-bursitis-seat-cushion/ “Hip bursitis” usually means the side of the hip, which no seat cushion can reach. How to tell it from the sit-bone case. Not medical advice. Fri, 28 Aug 2026 00:00:00 +0000 https://aylio.com/learn/piriformis-syndrome-seat-cushion/ https://aylio.com/learn/piriformis-syndrome-seat-cushion/ What piriformis pain is, why cutouts mostly cannot reach it, and the one overlap case where sit-bone geometry is worth checking. Not medical advice. Fri, 28 Aug 2026 00:00:00 +0000 https://aylio.com/learn/sitting-with-proximal-hamstring-tendinopathy/ https://aylio.com/learn/sitting-with-proximal-hamstring-tendinopathy/ Why sitting flares proximal hamstring tendinopathy — the tendon anchors to the bone a chair presses on — and what a cutout cushion can and cannot change. Fri, 28 Aug 2026 00:00:00 +0000 https://aylio.com/learn/ischial-tuberosity-101/ https://aylio.com/learn/ischial-tuberosity-101/ A plain-language guide to the two bony points that carry your weight when you sit, why they concentrate pressure, and what it means for chairs and cushions Tue, 25 Aug 2026 00:00:00 +0000 https://aylio.com/learn/sit-bone-width-bike-saddle/ https://aylio.com/learn/sit-bone-width-bike-saddle/ Sit-bone width decides saddle fit: fitters add roughly 20–40 mm depending on how upright you ride — and the same number sizes a cutout desk cushion. Tue, 25 Aug 2026 00:00:00 +0000 https://aylio.com/learn/gel-vs-foam-vs-cutout-cushions/ https://aylio.com/learn/gel-vs-foam-vs-cutout-cushions/ Gel spreads load, memory foam conforms, cutouts remove contact entirely. What each approach does over an eight-hour sit, and where each one gives out. Sun, 23 Aug 2026 00:00:00 +0000 https://aylio.com/learn/tailbone-pain-vs-sit-bone-pain/ https://aylio.com/learn/tailbone-pain-vs-sit-bone-pain/ Two different pressure points that need two different cushion shapes. How to tell which one you are dealing with, and what geometry each one asks for. Sun, 23 Aug 2026 00:00:00 +0000 https://aylio.com/learn/ischial-bursitis-sitting/ https://aylio.com/learn/ischial-bursitis-sitting/ What ischial bursitis is, why sitting aggravates it, and the difference between cushioning an inflamed area and taking the load off it. Not medical advice. Sat, 25 Jul 2026 00:00:00 +0000 https://aylio.com/learn/measure-sit-bone-width/ https://aylio.com/learn/measure-sit-bone-width/ A 60-second cardboard method for finding the distance between your sit bones — and what that number tells you before you buy a saddle, chair or cushion. Sat, 25 Jul 2026 00:00:00 +0000 https://aylio.com/learn/sit-bone-pain-when-sitting/ https://aylio.com/learn/sit-bone-pain-when-sitting/ Why sitting pain concentrates in two specific spots, why hard chairs make it worse, and what the load path through your pelvis has to do with it. Sat, 25 Jul 2026 00:00:00 +0000 https://aylio.com/learn/why-firm-beats-soft/ https://aylio.com/learn/why-firm-beats-soft/ Soft cushions feel better for the first hour and worse by the sixth. The reason is compression — here is the mechanism, and when soft is the right answer. Sat, 25 Jul 2026 00:00:00 +0000