This sporty lace-up boot has a zipper in addition to the laceand is therefore easy to put on and take off. The sole of the Glacier is ultra flexible and super light. As you can see in the pictures, the nose is a bit up which allows your foot to unwind naturally. The strobel production method also contributes to the flexibility of the shoe whereby the shaft is sewn to the insole stitch by stitch, elastically.