Amazon takes up to 70% off a selection of women's lingerie, sleepwear, and more during its Lingerie Semi-Annual Savings Sale. (Prices are as marked.) Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping starts around $5.) Deal ends January 31. A couple of best bets:

• Steve Madden Legwear Women's Solid Marl Boot Sock 2-Pack for $6.31 ($12 off)
• Hanes Women's ComfortBlend Low Rise Modern Brief 10-Pack for $9.99 (low by $18)