Base Sport Square Top
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A close-up of a model wearing a black sports bra with wide shoulder straps and a square neckline, paired with black high-waisted leggings, against a light gray studio background.
Close-up of a model wearing a black sports bra and matching high-waisted leggings against a light gray background.
Close-up back view of a model wearing a black sports bra and matching high-waisted black athletic shorts against a light gray studio background.
A woman modeling a black athletic set consisting of a square neck bra top, matching high-waisted shorts, and an open black zip-front bomber jacket, posed against a light gray studio background.
A woman modeling a black athletic set consisting of a sports bra and high-waisted biker shorts, paired with white socks and white sneakers, against a light gray studio background.

Base Sport Square Top

Base Sport Square Top

$88
$88
$88
$88
Clean, supportive, and cut with precision. This top features a modern square neckline and wide-set bonded straps for light support without extra hardware or padding. Double-lined for a gentle, natural hold, it’s finished with bonded seams that lie smooth against the body without bulk or digging. Our custom spacer-lite fabric combines Lycra with soft yarns for high-performance stretch, zero sheerness, and a refined, silky feel. Made for low-impact movement and everything that follows. A strong base, in every sense.
NEWBlackNEWCreamNEWMink
Size
Size
Size
Size Guide
Size Guide
Color
Color
Color
Quantity
Quantity
Quantity
Low stock
Clean, supportive, and cut with precision. This top features a modern square neckline and wide-set bonded straps for light support without extra hardware or padding. Double-lined for a gentle, natural hold, it’s finished with bonded seams that lie smooth against the body without bulk or digging. Our custom spacer-lite fabric combines Lycra with soft yarns for high-performance stretch, zero sheerness, and a refined, silky feel. Made for low-impact movement and everything that follows. A strong base, in every sense.
  • Details
  • Fabric + Care
  • Easy Returns
  • Size Chart
  • Use this as a guide. Preference is a huge factor — if you're near the top of a size range and/or prefer more coverage, you may want to size up.
  • Features a square neckline
  • A custom fabric, years in the making — combined elements from two fabrics we loved into one that actually performs
  • Black is a raven deep noir tone
  • Main: 60% Nylon, 40% Lycra, Lining: 50% Nylon, 50% Lycra
  • Machine wash warm, no bleach, tumble dry low, wear often
  • All full-priced items (including packs) are eligible for return or exchange within 30 days of the original purchase date.
  • All last chance items marked with "Final Sale" are not eligible for return or exchange.
  • Given the delicate nature of what we sell, items must be unworn, unwashed, undamaged, with tags attached and in original packaging to proceed with a return.
  • Packs must be returned in full.
  • To help ensure your items are eligible for a return, please check out ‘Try-On Tips’ in our Help Center.
  • Want more info about shipping, materials or care instructions? Here!

    Q’s on fit or sizing? Email us at [email protected]
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Detail view of Base Sport Square Top in Black for sizer

Complete the set

A woman modeling a black athletic set consisting of a cropped zip-front bomber jacket, a matching sports bra, and high-waisted shorts against a light gray studio background.
Base Sport Bomber in Black
$198
$198
A close-up of a model wearing black high-waisted athletic shorts and a matching black sports bra against a light gray studio background.
Base Sport Bike Short in Black
$98
$98

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