Ends 5/3. Groupon has a 6-pack of Dr. Scholl's Blister Guard Men's Socks (ankle or crew) for $18 with free shipping. Available in size 7-12. They also have a 6-pack of Dr. Sholl's Blister Guard Women's Ankle Socks for $17 with free shipping. Helps to eliminate blisters, reduce friction and manage moisture. $26 on Amazon.