UMBRO IMPULSA RUNNING SHOE Our High Level Performance Running Trainer. Ready for the rigours of a Tempo Run or Hill Session, and especially that all-important Recovery Run. Designed to keep you on the run with a breathable mesh upper for excellant comfort and a Memory Flex midsole providing shock absorption. Lace up and feel the potential. Textile 60% PU 40% Engineered mesh upper for comfort and breathability. A combination of PU and TPU overlays provide support and stability Dual Density 'Memory Flex' outsole for cushioning and stability Moulded TPU stabiliser.