These SITE SPECIFIC packs, some with belts and straps, are designed to keep your surface tension to a minimal, allowing improved mobility and pain reduction. The packs are made of 100% cotton and filled with flaxseed. Wear them while you; walk or jog, work in the shop, ski, ride in a car, sit at the desk..., iI especially like to wear the Hipster while doing yoga, furthering the benefits of the phyiscal therapy. Especially good for sciatica... Head to Toe Coverage; Migranes to Neuropathy. We have enclosed feet pillows and leg Blankets,gloves, etc. Visit Terri Ask on Facebook and see the complete line of products available. Special needs? We can custom design a pack for you.