Simpla Leg Bag Straps / Holders Leg bag straps and hangers designed for flexible use of urine bags. The straps are of unequal length, with the shorter strap designed to fit on the bottom of the bag to give optimum support. For a calf-worn leg bag, the upper strap is designed to fit in a figure of eight around the back of the knee, fixing above the knee. Simpla straps are made from Polyamide, Polyester, Polyurethane, Elastane and Silicone. Simpla straps Soft, elastic fabric straps with silicone beading for no-slip function. Simpla bag hangers Bag hanger for attachment to the bedrail, or floor stand for placement by the bedside.