Kahtoola NANOspikes

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Overview
Specs

Purpose built for use on hard surfaces. Ultralight and comfortable, yet tough enough to handle even the roughest streets and sidewalks. Ten low-profile, ultra-tough tungsten carbide spikes per foot are integrated into two TPU plates and provide exceptional grip. The plates are flexible, wear resistant, and disperse force evenly across the footwear sole. This design results in a very low-profile fit, so there is minimal effect on running stride. NANOspikes ® traction is ideal for use on lightweight running shoes.

Materials:
* Spikes: Tungsten carbide anchored in aluminum and thermoplastic polyurethane (TPU) lugs
* Traction Plates: Dual-compound thermoplastic polyurethane (TPU)
* Harness: Thermoplastic elastomer (TPE)
* Reinforced Eyelets and Toe Bail: Thermoplastic polyurethane (TPU)

Specs:
* Length: 0.21 in / 5.33 mm
* Number of spikes per foot: 10
* Packed Size: 5.75 x 4 x 2.25 in, 52 in³ / 15 x 10 x 6 cm, 900 cm³

Weight (per pair):
* Extra Small: 7.2 oz / 204 g
* Small: 7.5 oz / 214 g
* Medium: 8 oz / 226 g
* Large: 8.3 oz / 236 g
* Extra Large: 9 oz / 255 g

Sizing (Running Shoes):
* Extra Small: Men: 5-6.5 / Women: 6-7.5
* Small: Men: 6.5-8 / Women: 7.5-9
* Medium: Men: 8-10 / Women: 9-11
* Large: Men: 10-12 / Women: 11-13
* Extra Large: Men: 12-14 / Women: 13+

Features:
* Ten integrated spikes per foot easily grip hard surfaces
* Low-profile traction plates keep spikes firmly in place and disperse impact forces evenly across the footwear sole
* Secure elastomer harness ensures an optimized fit and retains elasticity down to -22°F / -30°C
* Patented reinforced eyelets strengthen key stress points
* Toe bail for added comfort and security
* Raised heel tab for easy on and off
* Includes tote sack measuring 8 x 6.75 x 0.25 in / 20 x 17 x 0.6 cm