The Merrell Mqm Ace Mid women's waterproof hiking shoe is inspired by athletes and made especially for you. This hiker packs all the technology needed for moving quickly in the mountains into one fast, protective shoe. It is made of engineered mesh and TPU upper and M SelectTM DRY impermeable membrane that seals out water and lets moisture escape. The hook and lace-to-toe lacing provide a secure fit. The floating HypercageTM offers lightweight support.