Commonly referred to as sandbags, ours are filled with Blue Diamond® Gel which offers pressure reduction compared to the harsh rigidity of an actual sandbag. These positioners are great for tucking and wedging.  Blue Diamond® dry viscoelastic polymer gel pads and positioners are designed to simulate human adipose tissue composition. This will greatly reduce the risk of decubitus ulcers caused by sheer friction. Independent studies have proven the superiority of gel as compared to foam and other conventional positioning and pressure reducing products. The only clinically proven gel composition in the medical marketplace is a dry viscoelastic polymer gel. Blue Diamond® gel is a dry viscoelastic polymer gel. THE PROBLEM: Pressure insults and injury. THE SOLUTION: Blue Diamond® Gel positioning aids THE FACTS: All Blue Diamond® Gel positioners are: ? 100% Latex-Free ? X-Ray Translucent ? Radiolucent ? Antimicrobial All of our Blue Diamond® gel products contain no water (which will evaporate and change gel composition over time), they will not leak, ooze or evaporate and will leave no oily residue on your hands after use. Blue Diamond® products are manufactured to the highest standards. We back our complete line of gel products with a •customer-satisfied• 2 year guarantee.