INSTANT LIFETIME guarantee WITH THIS PRODUCT! A performance thin weight, waterproof mid-length sock designed specifically for MTB (Mountain Biking ) for conditions where minimal insulation & maximum breathability are required. Featuring our unique Hydrostop technology which gives you a much more secure fit between your leg & the top of the sock, meaning the chance of water ingress through the top is massively reduced. Constructed with our proprietary Stretchdry waterproof, breathable & windproof technology Our lightest waterproof sock, ideal for warm, wet days Silicone free elasticated taping provides a secure fit at the cufff reducing the chance of water ingress allowing you to stay out for longer Merino wool lining for moisture control & comfort Elasticated ankle & insteps offer support & a comfortable fit