Asas USA via Amazon offers the Lapasa Men's Cotton Fly-Front Boxer Briefs 4-Pack in several colors (Multicolor pictured) for $16.99. Coupon code "7CZL59NJ" cuts the price to $13.59. Plus, Prime members receive free shipping. That's $3 under last month's mention, $3 off, and the lowest price we could find. It's available in select sizes from S to XXL. Deal ends December 31.