# UA Base™ 4.0

- **Brand:** Under Armour
- **Price:** $65.00
- **Catalog:** underarmour
- **Retailer:** underarmour
- **Product URL:** https://go.cosimo.shop/r/gAAAAABqzmCABnJFyqxCwKFZZyACbRJAMuHO5YTiQ9NqjIKBvCdnXEeiKzD_ZMPhmPkAGFbldG4LLxXJJOq81AG-T9rEGn_WR4bWgEFBm10WY-2tLmfxL6t89mYmVxFIG1gneuIUVRm1Btz3mk4T6QyMfSYPuwkpFcp4X_dXuH1WFanchhP0KlQ6ei8JANt8qvk8W5hcK2_ID8Xn0wVePwD2x_K9lwd0xUm2HWCYZWmDqIaCL45UCus4lw8_y8WgXhTFdLeEyTbKclkvdjsQPxeZdX4MDxiRBUxuIRP1anXPtQsIgH4SJFah6B82Ewqu8gG9jcpPwT57n6gkAk6XiEJ0Y3zG4OEe1RqCzZ9kOlzUTTe6kV6dk46njWIPBUL4mHAlHen_lRhGiEx7U9WuLJD1dOwE6EcUtWYdwaNJ7vGP2mAYtNkfI-dpRTlEPIWB4ku0N56jLYge5bawupPUT73Vo2poeghydA==
- **GTIN:** 198632812341
- **Availability:** In stock

## Summary

Boys' long sleeve athletic base layer shirt in black with a white logo, featuring a fitted design and stretch polyester-elastane fabric for warmth and comfort.

## Description

Meet the all-new UA Base™—delivering the same trusted warmth without the bulk—now softer and smoother than ever for unmatched comfort on every adventure.

## Appearance

- **Colors:** Black / White - 001 (Out of Stock), Black / White - 001
- **Sizes:** YXS, YSM, YMD, YLG, YXL (per-size availability under Variants)
- **Materials:** 93% Polyester/7% Elastane
- **Fit:** Tight: Snug, no squeeze

## Variants

- **In stock:** 10 of 10
- **Available:** Black / White - 001 (Out of Stock) / YXS, Black / White - 001 (Out of Stock) / YSM, Black / White - 001 (Out of Stock) / YMD, Black / White - 001 (Out of Stock) / YLG, Black / White - 001 (Out of Stock) / YXL, Black / White - 001 / YXS, Black / White - 001 / YSM, Black / White - 001 / YMD, Black / White - 001 / YLG, Black / White - 001 / YXL

| Size | Color | SKU | Availability |
| --- | --- | --- | --- |
| YXS | Black / White - 001 (Out of Stock) | 6006135-001-YXS | In stock |
| YSM | Black / White - 001 (Out of Stock) | 6006135-001-YSM | In stock |
| YMD | Black / White - 001 (Out of Stock) | 6006135-001-YMD | In stock |
| YLG | Black / White - 001 (Out of Stock) | 6006135-001-YLG | In stock |
| YXL | Black / White - 001 (Out of Stock) | 6006135-001-YXL | In stock |
| YXS | Black / White - 001 | — | In stock |
| YSM | Black / White - 001 | — | In stock |
| YMD | Black / White - 001 | — | In stock |
| YLG | Black / White - 001 | — | In stock |
| YXL | Black / White - 001 | — | In stock |

## Categories

- **Categories:** Kids > Boys > Shirts & Tops

## Additional Attributes

- **brand:** UnderArmour
- **features:** UA Base™ 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold, Updated fabric with improved stretch is softer & smoother for maximum comfort and easier layering, Dropped, shaped hem, Raglan sleeves, Odor control technology minimizes odor, Imported, 93% Polyester/7% Elastane
- **material:** 93% Polyester/7% Elastane
- **style number:** Style #: 6006135
- **body material:** Material wicks sweat & dries really fast, 4-way stretch material moves better in every direction
- **positivenotes:** Keeps You Warm, Fast-Drying, 4-Way Stretch
- **merchantreturndays:** 60

## Enrichment

- **Type:** base layer
- **Type Synonyms:** thermal shirt, long sleeve undershirt, compression shirt
- **Gender:** male
- **Age Groups:** kids
- **Activewear:** Yes
- **Tags:** long sleeve, crew neck, fitted, logo detail, stretch fabric
- **Styles:** athletic, sporty
- **Colors:** black, white
- **Color Families:** Black, White
- **Category Path:** Apparel & Accessories > Clothing > Underwear & Sleepwear > Sleep & Loungewear > Thermals & Base Layers
- **Fabric:** Elastane (Spandex / Lycra), Polyester
- **General Clothing Features:** Stretchable
- **Insulation Level:** Thermal
- **Pattern:** Logo, Solid
- **Canonical Brand:** Under Armour

## Images

- ![Image 1](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/0bd5c93b3113a28470e7e525cbc71d1a.webp)
- ![Image 2](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/64a8927396805901a52f0cbfd928cb9a.webp)

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*Source: cosimo.shop | Product ID: 670aec62-d03c-527b-83e9-ac6f5eb6f1eb | Canonical URL: https://cosimo.shop/product/under-armour/ua-basetm-4-0-703a0a54-cc02-4805-9577-27a021e6e1b5*