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Build A Set
Pads
Liners
Underwear
Cups
Extras
Period Relief
Sale
Shop All
Our Tech
Reviews
FAQs
Our Story
Blog
Impact
Education
Period Underwear
Aisle period underwear feature a multi-layered leakproof lining, made with Truetex™ fabric technology, that absorbs at least 4 tampons' worth of menstrual fluid.
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Color
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Beet
Green
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BOOST Boxer
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Absorbs 8-11 tampons
Absorbency
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2X
3X
4X
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Color
Black
Green
Beet
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BOOST Hipster
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Absorbs 8-11 tampons
Absorbency
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XS
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XL
1X
2X
3X
4X
5X
Color
Black
Green
Beet
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BOOST Brief
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Absorbs 8-11 tampons
Absorbency
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1
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Size
XS
S
M
L
XL
1X
2X
3X
4X
5X
Color
Green
Beet
Black
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BOOST Retro Brief
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Absorbs 8-11 tampons
Absorbency
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1
2
Choose a Size
Size
XXS
XS
S
M
L
XL
1X
2X
3X
4X
5X
Color
Black
Beet
Green