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Slix Closer Boxer Brief

Slix Closer Boxer Brief

(14 customer reviews)


Comfort, style and functionality combine to deliver unparalleled benefits that help you close the deal.

6 for $129

View our Size Chart

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 Slix Closer® Boxer Brief


  • True-to-Size Fit
  • More-breathable pouch for all-day comfort and freshness
  • Slix®-Soft frictionless fabric breathes, wicks, dries quickly
  • and controls odor for all-day comfort and freshness
  • Anti-chafing, flatlock seams
  • Soft, microfiber waistband


  • 81% Polyester
  • 19% Spandex

Size Chart Slix Closer®

Underwear Size Waist
Small 28-30 in.
Medium 30-32 in.
Large 33-36 in.
X-Large 37-40 in.
XX-Large 41-44 in.
XXX-Large 48-51 in.
XXXX-Large 52-55 in.

Additional information

Weight 1.2 kg
Dimensions 12 × 6 × 2 cm

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14 reviews for Slix Closer Boxer Brief

  1. Get Your Slix On

    The Slix Closer’s I bought are very comfortable. The ventilation is my favorite feature. PS

  2. Get Your Slix On

    Absolutely LOVE them! I’ve been wearing them since you all first started and was one of the first people to wear them. Keep up the good work Slix! CF

  3. Get Your Slix On

    I love my Slix undies. I have some shirts as well, though I don’t wear them as often as I do my closers. I tell people about them all the time and about how comfortable and awesome they are. JQ

  4. Get Your Slix On

    Slix is the best I’ve ever worn. I wear nothing but Slix! JS Golf

  5. Get Your Slix On

    I love my Slix! I have thrown out all of my other gear. I also tried the long underwear and tee this winter, they are phenomenal. Keep the great quality going. DK

  6. Get Your Slix On

    So far all of the Slix products I have received I have used for work and working out. I have to say they are well made, comfortable, sturdy, and of high quality. KEEP DOING WHAT YOU ARE DOING! AR

  7. Get Your Slix On

    Slix are Awesome, Very comfortable! I can now get through a 16 hr day without any discomfort. Wouldn’t give up my Slix for anything! PJ

  8. Get Your Slix On

    The best I have ever worn. Even my 14 son will only wear SLix. Jeff V

  9. Get Your Slix On

    Love your product! The fit, feel and over all comfort is tops! Michael S.

  10. Get Your Slix On

    Slix are the only underwear that I wear. I have been wearing them since the very beginning of your company. They are very comfortable. I have about a 3 week supply. Michael I.

  11. Get Your Slix On

    Slix are by far the most comfortable and durable underwear I’ve tried. I work in a warehouse on my feet all day walking and these never ride up. After several months of use they show no wear at all. They also wick sweat better than most performance underwear I’ve purchased. They are not cheap, but they are worth every penny in my opinion. I plan to buy more! James C.

  12. Get Your Slix On

    The Slix Closers I bought are very comfortable. The ventilation is my favorite feature. PS

  13. kyia

    I love these. They are comfortable and really durable. These are bi-far the best underwear I have ever owned. They stay in place and look good. I totally forget I am wearing them at all. These are not cheaply made. The fabric is light and comfortable. Even the band is comfortable and I have had issues with that in some underwear I have purchased. This is true to size and they don’t dig in. These are made great. They look and feel great too!

  14. Erin

    I have many different brands of black boxer briefs, many much more expensive than these, but these are my favorite. The material feels like silk, & they’re extremely comfortable. The plus feature is that they have a fly. So many of the more expensive ones do not. I bought an XL as I do with all the brands I have . I only have a 36 waist but I have larger legs from my work outs. They’re not bad out of the box but after one washing they’re perfect. I know there’s no cotton in them but they do seem to fit a bit snugger after a wash.

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