Giro: RUGGED SOLE MEETS ATHLETIC SPIRIT The Gauge is an athletic approach to women’s mountain bike footwear, made to inspire confidence for any trail. Thermo-Bonded Armor is durable and lightweight. Rockprint reinforced toe for abrasion resistance and durability. Synthetic heel overlay resists abrasion. Lace closure with lace holder. Tubular laces are durable and hold a knot.