Get the support and comfort you need while you are lifting weights in the gym with these Inov-8 Fastlift 400 Boa trainers. Dual-BOA dial system locks down to ensure a customized secure fit every time. External Heel Cage and Power-Truss technology give lateral stability and a stable base for lifting. Meta-Flex technology in the forefoot provides more comfortable movement. Olympic weightlifting to other functional movements in the same workout. Sticky rubber outsole delivers outstanding underfoot grip.