Jockey
Details: Take 15% off entire purchase of mens apparel. Unknown expiration. May work for womens apparel.
Sock Company
Details: 20% Off SmartWool Socks Sale Items.
deadgoodundies.com
Details: 30% off Select Olaf Benz Underwear & Swimwear. Limited Time Offer.
Diskology
Details: Special rates available for online orders
Socks 'n' Jocks Australia
Details: Get 10% off.