Features:
Great for running, hiking and walking on all kinds of slippery terrain
Durable, compact elastomer harnesses with overmolded eyelets allow easy on / off
0.21-in. tungsten carbide spikes are surrounded by tapered, shock-absorbing cleats; 10 spikes for each foot offer complete coverage
Built-in snow release helps prevent buildup underfoot
Comes with a carry case
Imported.

Sizing is as follows for US shoe sizes:

Small fits Women's sizes 7 - 9 / Men's sizes 6 - 8
Medium fits Women's sizes 9 - 11 / Men's sizes 8 - 10
Large fits Women's 11 / Men's sizes 10 - 12
XL fits Women's 13 / Men's sizes 12 - 14

Technical specs
Best Use: Multisport
Material(s): Elastomer/tungsten
Weight: 8 ounces