1 Interchangeable needle kits are exactly what they sound like--a set of knitting needle tips, and a set of cords of varying length that can attach and detach from the tips to create many different combinations of needle sizes and cord lengths.
People with diabetes can develop many different foot problems. Even ordinary problems can get worse and lead to serious complications. Foot problems most often happen when there is nerve damage, also called neuropathy. This can cause tingling, pain (burning or stinging), or weakness in the foot. It can also cause loss of feeling in the foot, so you can injure it and not know it.
So the soles of shoes for people with diabetes have special stabilizers to keep feet level. You will notice that the soles are thick and wide. Thicker soles cushion your feet from wear and tear, and that little bit of extra width helps your feet to avoid those hot spots.