Calvin Klein's men's underwear sale includes multi-packs of trunks and boxer briefs with discounts reaching 70% off. We've pictured the Micro Stretch 7-Pack Boxer Brief for $49.75 ($50 off). Shoppers who spend $125 or more in their cart get an extra 20% off, stacking savings across multi-packs. Shipping is free with orders of $50 or more. Buy Now at Calvin Klein

At Amazon, get these Men's Cotton Boxer Briefs 4-Pack, with prices starting from $13. It's a great price for a 4-pack of men's cotton boxer briefs. Shipping is free for Prime members. Buy Now at Amazon

Stacking promo codes "OCT40" and "EXTRA10" take an additional 40% and 10% off Under Armour's outlet underwear selection with prices as low as $9 for its Performance Tech Boxerjock, while 3-packs start at $20 after both codes. We've pictured the Under Armour Men's UA Performance Tech 6" Boxerjock 3-Pack for $20 after the coupon code ($22 off). Shipping is free over $50, too. Buy Now at Under Armour

lululemon's We Made Too Much Underwear event drops single pairs of women's styles like InvisiWear and UnderEase to $14, while multipacks start at $39 for 3-packs. Larger bundles stretch to 7-packs, including the Always In Motion Boxer Brief 5" 7-Pack at $119, down from $168. The lineup also covers men's Always In Motion and Soft Stretch Active boxers and boxer briefs in 3", 5", and 7" lengths. We've pictured the Men's Always In Motion Boxer Brief 3-Pack for $64 ($24 off). All orders get free shipping. Buy Now at lululemon

This Tisancy red elephant mankini thong is priced at $6, down from $7. You can also get a range of other styles at varying prices. Buy Now at Amazon

At Amazon, get the Hanes Men's Moisture-Wicking Tagless Briefs 6-Pack for $19. It's the best deal we've seen for this multipack. Shipping is free for Prime members. Buy Now at Amazon

This seven-pack of Hanes tank tops is $15, which is $4 less than our mention from earlier this month, and a tie for the best price we've seen. Star Rewards members get free shipping over $39 (it's free to join). Buy Now at Macy's

This Hanes Men's Ultimate five-pack is $15, the lowest price we could find by $12. The boxers use a moisture-wicking woven cotton-blend fabric with a stretch waistband and a fly designed to lie flat. Star Rewards members get free shipping over $39 (it's free to join). Buy Now at Macy's

This Macy's sale takes up to 70% off men's underwear, undershirts, pajamas, socks, and slippers from brands including Polo Ralph Lauren, Calvin Klein, Tommy Hilfiger, Lacoste, Hanes, and Jockey. Star Rewards members receive free shipping on orders over $39 (it's free to join). Non-members can pay $10.95 or get free shipping on orders over $49. Pickup is available on most orders, too. Shop Now at Macy's

Walmart offers the Everlast Men's Performance Stretch Boxer Briefs 6-Pack in several colors for $12.98.  That's a $4 savings.  Choose pickup or spend $35 to avoid the $6.99 shipping charge. Buy Now at Walmart

At Amazon, check out with Subscribe & Save to get this adidas Men's Performance Boxer Brief 3-Pack for $19. It's the best price we could find by $15. Shipping is free for Prime members. Buy Now at Amazon

lululemon offers the lululemon Men's Always in Motion 5" Boxer Briefs for $24.  That's a $10 savings.  Shipping is free. Buy Now at lululemon

This Calvin Klein 4-pack is $21 at Macy's. It's a $32 savings. Star Rewards members get free shipping over $39 (it's free to join). Buy Now at Macy's

32 Degrees offers  its 32 Degrees Men's 3-Pack Cool Trunk Boxer Briefs 3-Pack for $11.99. Coupon code "NEWSFLASH" cuts it to $8.99. That's $29 under the $38 comparable value. The moisture-wicking, 4-way stretch fabric is designed to be quick-drying and anti-pilling. Shipping adds $6, or you can spend $32 or more to get free shipping.  Buy Now at 32 Degrees

Shop men's underwear at 32 Degrees to get discounts of up to 70% off. Prices start under $5. Plus, apply promo code "NEWS24" to get free shipping on orders of $23.75 or more. Deal ends December 31. Shop Now at 32 Degrees

These bamboo-fabric boxer briefs suit anyone wanting a softer, more breathable alternative to cotton underwear for daily wear, and at $31.87, that's $21.12 (40%) off the $52.99 list price. Buy Now at Amazon

Modal fabric breathes better than cotton and holds up well over repeated washes, which matters if you're replacing underwear that's gone thin or baggy; right now the 4-pack runs $19, about 21% off the $24 list price. Buy Now at Amazon

Built with a dual pouch design for separation and support, which makes a real difference if you've only worn standard briefs before, and this two-pack runs $5.60 below list price right now. Buy Now at Amazon

Daily wear is where this pack earns its keep, with the micro stretch fabric giving a bit more give than standard cotton briefs for guys who want comfort without a premium price tag. Buy Now at Target

Cold-weather commuters and anyone layering up for outdoor work will get the most use out of this cotton thermal set, and it's currently $5.60 off the $27.99 list price. Buy Now at Amazon