LRPu

{{refimprove|date=June 2008}}

LRPu or low-resilience polyurethane is a material distinguished by an "ability to slowly return to its original shape".[http://www.macworld.com/article/59448/2007/08/sleevesbrief1.html macworld covers LRPu]

The resulting impact resistance results in LRPu being used in soft laptop sleeves and other lightweight cases for portable electronic equipment, as an alternative to the softer neoprene.