- 900D textile in forefoot for durability
- TPU toe cap & added external heel support
- Scratch resistant rubber heel overlay for added durability
- Carbon fiber internal shank plate for added stability
The Under Armour Infil has an anatomically molded upper with welded forefoot overlay for superior fit. UA's Boa speed closure system makes lace-up a breeze with a quick turn of the BOA ratchet. Cupron Anti-Fungal Pro Fibers kill 99.9% of athlete's foot fungus after 12 hours of contact with the sock liner. The Cupron fibers also reduce odor caused by bacteria and fungi. A rugged, high traction rubber lug outsole is engineered for better grip through harsh terrain.