SILVER CREW SOCKS | YYZ SLEEVE Middle layer: Filter with 97%

Middle layer: Filter with 97% filtration efficiency (filter tested according to the AFNOR SPEC S76-001 standard)

We stand by our products and you'll never be left hanging

20-30 mmHg Medical Grade Compression

Compression technology can relieve pain

SILVER CREW SOCKS | YYZ SLEEVE Middle layer: Filter with 97%Whether you're Departing, Arriving or stuck with a Layover; these YYZ originals will keep you smelling & feeling fresh! SixSox was born in Toronto & we love to show it off any chance we get! We offer a 100% satisfaction guarantee on all of our Silver Technology! We stand by our products and you'll never be left hanging. Concerns & complaints are always addressed and resolved by one of our 3 founders. Size Chart: Sizes US Shoe Size Small Medium 5 9