The GR5 track crosses difficult alpine passes and isolated, steep mountainous rocky ridges. Our new G TREK 5 GORE-TEX® boots are therefore for the no-compromise trekker. Thanks to a high-level of support and a rear crampon attachment these boots can function well in summer alpinism. To maximise the comfort experience these boots are provided with double-layer insole liners where one layer can be removed to help a perfect fit for wider feet. The G TREK 5 GORE-TEX® is a perfect choice for any level of difficult trekking terrain including alpinism in summer.