Amoena Natura Xtra Light 2SN form #400 is a new solution for those times when you want a lighter-than-lightweight breast form. Weighs nearly 40% less than standard silicone forms of the same shape and size. Designed in a new anatomical shape that fits snug against your body. Two layer design helps the form stay upright in your pocketed bra. Includes Comfort+ temperature equalizing technology for all day comfort.