# Base Sport™ – Square Top

- **Brand:** Negative Underwear
- **Price:** $88.00
- **Catalog:** negativeunderwear
- **Retailer:** negativeunderwear
- **Product URL:** https://go.cosimo.shop/r/gAAAAABq3chFTnxQng4kB-YQJSmCvkff4Ve2aV-kXVchIkjDzpZPzfh5QFepPt8K9Epqf0aq_ExVhdpGIMhdJOSzpeiRxVJW7T5GPTvkGWCmkcAnMtU9cMpB_yPpQUDW98oRkG9ugfXwqLQ0sWhisOyoZpbMGnDAmFnYgvA4ycXYB8slecwQT4O1-wuIrwVlI1eyMkZsIVGZ5OJqr2HUvTWZqpiL7Xi4c-8IKCdwHX9fBSq1c5P8BeAjZWlVbPxz1YplZNSq0Qw0dgGUkQ8mLiZLfWwxQBDAU_AaO_tQr4um_fMdrvudxw9uLDHEb13tQX04rsLZF5W9VvGT82sllWECUtU1Q4ADJi2ohQZ-MQrb3Co2KzzVjhxnMKvBS2Hvy3Y_-Hde7aDVEn8mn9rA3Ruxu6JUTzy8Kt5nRuOxblEN4wT1iKToIkbf_IzNfC4hOrKOo--oXmhf7ry3TAE5tNrmuDT7n4IXoA==
- **GTIN:** 840285852051
- **Availability:** In stock

## Summary

Black sports bra featuring a modern square neckline, wide-set bonded straps, and a seamless, double-lined construction for light support.

## Description

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. *411* 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 *FABRIC* 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

## Appearance

- **Colors:** Black
- **Color Families:** Black
- **Sizes:** 0, 1, 2, 3, 4, 5 (per-size availability under Variants)
- **Materials:** 60% Nylon, 40% Lycra, 50% Nylon, 50% Lycra

## Variants

- **In stock:** 6 of 6
- **Available:** 0, 1, 2, 3, 4, 5
- **Color (all variants):** Black

| Size | SKU | Availability |
| --- | --- | --- |
| 0 | NK-414-01BT-0 | In stock |
| 1 | NK-414-01BT-1 | In stock |
| 2 | NK-414-01BT-2 | In stock |
| 3 | NK-414-01BT-3 | In stock |
| 4 | NK-414-01BT-4 | In stock |
| 5 | NK-414-01BT-5 | In stock |

## Categories

- **Categories:** Lounge

## Additional Attributes

- **tags:** base, newcolor-black, newcolor-cream, newcolor-mink, season:fa-2026, sizechart-nonwire, Sport
- **vendor:** Negative Underwear
- **product type:** Lounge
- **return policy:** All last chance items marked with "Final Sale" are not eligible for return or exchange.
- **shopify handle:** black-base-sport-square-top
- **care instructions:** Machine wash warm, no bleach, tumble dry low, wear often
- **color description:** Black is a raven deep noir tone
- **fabric description:** A custom fabric, years in the making — combined elements from two fabrics we loved into one that actually performs
- **material description:** A custom fabric, years in the making — combined elements from two fabrics we loved into one that actually performs

## Enrichment

- **Type:** sports bra
- **Type Synonyms:** bra top, crop top, athletic top
- **Gender:** female
- **Age Groups:** adult
- **Activewear:** Yes
- **Tags:** square neckline, wide straps, bonded seams, double-lined, seamless, pull-on
- **Styles:** minimalist, modern, athletic
- **Colors:** black
- **Color Families:** Black
- **Category Path:** Apparel & Accessories > Clothing > Underwear & Sleepwear > Lingerie, Intimates & Shapewear > Bras
- **Activity Intensity:** Low Impact / Studio
- **Bra closure type:** Pull-on (no Closure)
- **Bra style:** Bralette, Wireless
- **Bra support level:** Light
- **Fabric:** Elastane (Spandex / Lycra), Lycra, Nylon / Polyamide
- **General Clothing Features:** Stretchable
- **Opacity:** Opaque
- **Pattern:** Solid
- **Canonical Brand:** Negative Underwear

## Images

- ![Image 1](https://cdn.storerouter.ai/c135a18caffad14b33e1d3c79c12530c/911320c5ef4622d74cccc208fbb3c8e7.jpeg)
- ![Image 2](https://cdn.storerouter.ai/c135a18caffad14b33e1d3c79c12530c/90fe6d614970bcb93e376a726ef7d5a2.jpeg)
- ![Image 3](https://cdn.storerouter.ai/c135a18caffad14b33e1d3c79c12530c/f96f5d385eab8591513288f50a9f4f83.jpeg)
- ![Image 4](https://cdn.storerouter.ai/c135a18caffad14b33e1d3c79c12530c/a777135f7a4f8168766a89d5fb994a14.webp)
- ![Image 5](https://cdn.storerouter.ai/c135a18caffad14b33e1d3c79c12530c/235e8062afe81a6602ad87dd0f40f978.webp)

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*Source: cosimo.shop | Product ID: 4375c37c-1856-50f5-8cde-46eaa20cea89 | Canonical URL: https://cosimo.shop/product/negative-underwear/base-sporttm-square-top-8fbe9c48-d5a3-4ae2-84f0-42797120b2c5*