Today only, Lands' End takes 50% off regular-price swimwear, beach towels, totes, and water shoes via coupon code "TRUNKS" and PIN "7848" in celebration of National Swimsuit Day. Even better, the same coupon/PIN bags free 2-day shipping. (After entering the coupon/PIN, choose "FREE - UPS 2 Day" during checkout. That's a savings of $8 for every order under $50.) Some exclusions may apply. A couple of best bets, with prices after coupon:

• Lands' End Women's UPF 50 Tugless 1-Piece Swimsuit from $19.50 (savings of at least $33)
• Lands' End Men's UPF 50 6" Volley Swim Trunks for $19.75 (pictured, $33 savings)