Spin Ultra - Womens Size:40.5 This year-round performer features their

This year-round performer features their lightest-weight Merino jersey fabric with a nylon core to increase durability while still keeping 100% soft Merino wool next to skin

Can be carried by hand

For unprecedented comfort during your backcountry adventures

K10’s binding system also allows the ankle and foot to move independently

Spin Ultra - Womens Size:40.5 This year-round performer features theirThe perfect choice for moderate to ultra distance runs, the multi award winning Spin Ultra offers outstanding cushioning and support in a stable package featuring ample upper protection to keep your feet feeling great in all types of terrain.