Ultimate Performance Gel Heel & 3/4 Arch Insole Size:Large/X-Large (UK 8-13) collapsible flask features our classic

collapsible flask features our classic one-piece silicone bite valve for rapid hydration on race day

the outer uses a four-way stretch polyamide and elastane blend that's light and fast drying

enhancing noise cancellation

not ‘bag’ where they shouldn’t

That's where the Active-T Flow gets its name

Ultimate Performance Gel Heel & 3/4 Arch Insole Size:Large/X-Large (UK 8-13) collapsible flask features our classicDeeply contoured heel cup and central gel heel pad helps to stabilise the heel and foot to provide cushioning for the heel, arch and plantar fascia. Deeply contoured heel cup and central heel gel pad help stabilise the heel and foot while the contoured arch provides cushioning and support for the tendons. Shaped to cradles the heel for added stability the thin edge provides ultimate comfort, fit and feel. Slip resistant design helps keep insole in