ViPR (‘viper’) is an extremely effective training tool that is virtually indestructible and incredibly functional. ViPR has already made its mark in gyms, in instructor circles and in the media. ViPR is designed to: Provide an effective, whole-body workout Build muscle and burn calories through strength and movement training, Be lifted, dragged, thrown, stepped on and pretty much any movement you can think of. Be safe, as it’s made from rubber. Suitable for all ages and abilities.