your fabrics, your sizes

Build Your Own Boxettes

Girl relaxing on her bed in Boxettes boxer briefs
Girl jumping happily in Boxettes boxer briefs
Girl in sports socks wearing Boxettes boxer briefs

Mix & Match Fabrics and Sizes

Choose your favorite fabrics, colors, and sizes — even different sizes in the same order. No minimum required.

  • Sensory-friendly
  • Tagless
  • Full coverage
Comfort she deserves.
Confidence she keeps.

Size Chart (inches)

Size Waist width(inches) Leg opening width(inches) Hip width(inches) Weight(lbs)
4–5Y961228–38
6–7Y1071238–48
8–9Y1071348–63
10–11Y1171466–86
12–13Y1281588–93
14–16Y1381593–121
16–18Y13816121–134
18–20Y14917134–154

Waist, leg opening and hip are garment measurements, taken with the boxer brief laid flat. Weight is her body weight, as a general size guide.

How to measure the garment

Waist width

Lay the boxer brief flat and measure straight across the top of the waistband, side to side.

Leg opening width

With the boxer brief flat, measure across one leg opening, side to side.

Hip width

With the boxer brief flat, measure across its widest part at the hips.

Her weight

This one is her body weight, not the garment. Use it as a general guide to the best fit.

For the best comfort, choose the size that matches most of these measurements.

find your perfect

Boxettes Fabric Guide

Every Boxettes fabric is sensory-friendly, tagless and full-coverage. The difference is in the feel. Compare our four options and choose the comfort that suits her day.

01 · Fabric

Cotton

Classic everyday comfort

Sensory-friendly, soft, breathable cotton with gentle stretch, full coverage, and a comfortable, stay-put fit.

Best for

  • Everyday wear
  • Cotton lovers
  • Sensory-friendly comfort
  • A familiar, natural feel
Read more

Soft, breathable, and naturally comfortable. Our sensory-friendly cotton boxer briefs offer that familiar, cozy feel with gentle stretch, full coverage, and a comfortable, stay-put fit. Designed for all-day comfort, they’re perfect for school, relaxing, and everything in between.

02 · Fabric

Modal

Luxuriously soft. Premium quality.

Sensory-friendly, buttery-soft, breathable, and stretchy. Premium modal with a substantial feel that’s gentle against sensitive skin.

Best for

  • Sensitive skin
  • Sensory preferences
  • Lounging
  • Sleeping
  • Extra softness
Read more

Not all modal is created equal! Our premium modal is exceptionally soft, smooth, and stretchy, with a thicker, more substantial feel than many lightweight modal fabrics. It’s buttery-soft against the skin without feeling thin or flimsy. With gentle stretch, breathable comfort, and full coverage, it’s an excellent choice for girls who prefer an ultra-soft, sensory-friendly feel. Perfect for everyday wear, lounging, and sleeping.

03 · Fabric

Nylon

Silky smooth. Made to move.

Sensory-friendly, silky-smooth, breathable mesh with moisture-wicking performance, lightweight stretch, and a comfortable, stay-put fit.

Best for

  • Sports
  • Dance
  • Active lifestyles
  • Warmer days
  • A sleek, silky feel
Read more

Silky-smooth, lightweight, and ultra-stretchy. Our sensory-friendly, breathable mesh nylon boxer briefs wick away moisture to help keep her cool, dry, and comfortable. The smooth, quick-drying fabric moves effortlessly with her, while the full-coverage, stay-put fit provides comfort and confidence throughout the day. Perfect for sports, dance, active days, and everyday wear.

04 · Sold as a 5-pack

Period

Extra coverage. Extra confidence.

Sensory-friendly, extra-long, buttery-soft modal boxer briefs with a pad-friendly floating gusset, designed for added coverage, comfort, and confidence during her period.

Designed to be worn with a menstrual pad. Not absorbent on its own.

Best for

  • Pad users
  • Extra length & coverage
  • Sensory-friendly comfort
Read more

Periods shouldn’t mean compromising on comfort. Made from our premium, buttery-soft, sensory-friendly modal, all Boxettes period boxer briefs feature an extra-long design for added coverage and comfort, along with an innovative floating gusset designed to help keep menstrual pads and wings securely in place.

With gentle stretch, a comfortable stay-put fit, and extra coverage, they’re designed to help girls feel secure and confident throughout their period—without the bulk of traditional absorbent period underwear.

side by side Compare Fabrics at a Glance

FabricFeelWhat makes it special
Cotton Soft, cozy, familiar Sensory-friendly, naturally breathable everyday comfort
Modal Buttery-soft, smooth, substantial Premium softness and sensory-friendly comfort
Nylon Silky, cool, lightweight Sensory-friendly breathable mesh, moisture-wicking, quick-drying
Period Buttery-soft modal Sensory-friendly comfort, extra-long coverage, and pad-friendly floating gusset

every pair What All Boxettes Share

Sensory-friendly comfort
Full-coverage boxer brief design
Tagless comfort
Comfortable stretch for freedom of movement
Designed to stay comfortably in place
Made for everyday confidence and comfort

All period boxer briefs feature an extra-long design for additional coverage.

which feels right?Compare Our Fabrics

Pick any of these three fabrics for your singles, and mix them in the same order.

Cotton Everyday

Soft, breathable and familiar, with gentle stretch. Great for school, relaxing and everything in between.

Modal Extra soft

Buttery-soft premium modal with a substantial feel. Lovely for lounging, sleeping and sensory preferences.

Nylon Mesh Active

Silky, lightweight and moisture-wicking. Made for sports, dance and warmer days.

Looking for period underwear?

Our Period PadGrip™ boxer briefs are a separate product, sold as a 5-pack. They aren't one of the build-your-own singles fabrics.

Designed to be worn with a menstrual pad; not absorbent on its own. See the Period 5-pack →

Every pair is sensory-friendly, tagless and full coverage.

Read the full Fabric Guide
your fabrics, your sizes

Build Your Own Boxettes

Mix & match fabrics, colors, and sizes. No minimum quantity.

Build Your Boxettes

mix & matchBuild Your Own Boxettes