Keep young athletes performing at their best with the Under Armour Y Performance Tech Junior Crew Socks — available as a convenient 3-pair pack in a multi-color mod gray mix. Made from quick-drying, high-performance polyester fabric, these socks are equally at home during intense training sessions and everyday casual wear. Two core Under Armour technologies work together to deliver next-level comfort: the Moisture Transport System — UA's proprietary wicking system that pulls sweat away from the skin to the outer surface of the fabric so it evaporates faster, keeping feet drier for longer — and UA Tech fabric, an ultra-soft, lightweight construction that feels natural against the skin and delivers unrivalled all-day comfort for active kids.
Under Armour's Moisture Transport System is the foundation of comfort in these junior socks. Engineered to actively wick perspiration away from your child's skin and push it to the outer surface of the fabric, the technology ensures the material dries significantly faster than untreated textiles. The result is feet that stay drier for longer — even during the most intense training drills or active play sessions. This technology is especially important for kids, as damp socks can lead to blisters and discomfort that interrupts activity.
UA Tech is Under Armour's signature lightweight fabric construction, engineered with an ultra-soft, natural feel that young athletes will actually want to wear. The material delivers a barely-there sensation against the skin while maintaining the durability needed to withstand the wear and tear of daily activity, sports training, and repeated washing. The fabric retains its softness, shape, and color wash after wash, making it an outstanding choice for parents who want long-lasting performance from everyday essentials.
The new Locked-In Fit construction is specifically designed to solve the age-old problem of socks slipping down or bunching inside the shoe. A reinforced heel zone grips the foot and keeps the sock firmly in its correct position throughout all types of movement — from sprinting and jumping to casual walking. For young athletes, this means no more stopping mid-game to pull up a sock or adjust footwear, allowing them to stay fully focused on their performance.
Strategic medium cushioning is placed across the entire footbed, targeting the zones that take the most impact during physical activity. This padding protects against blisters, hotspots, and general foot fatigue without adding unnecessary bulk that could affect the fit inside a training shoe. Complementing the cushioning, built-in arch support compresses around the midfoot to provide added stability and reduce the muscular fatigue that accumulates during long training sessions or active days at school.
Strategically placed mesh panels on the top of the foot (instep) create ventilation channels that allow warm air to escape and cool air to circulate around the foot. This targeted breathability works hand-in-hand with the Moisture Transport System to regulate temperature and keep feet feeling fresh from the first minute of activity to the last. The result is a noticeably cooler, more comfortable wearing experience, particularly during high-intensity sports and extended training sessions.
| Product | Under Armour Y Performance Tech Junior Crew Socks |
| Pack Contents | 3 pairs of socks |
| Color | Mod Gray multi-color mix |
| For | Children / Juniors |
| Style | Crew |
| Material | 98% Polyester, 2% Elastane |
| Key Technologies | Moisture Transport System, UA Tech, Locked-In Fit |
| Cushioning | Medium — full footbed |
| Arch Support | Built-in |
| Breathability | Mesh panels on instep |
| Suitable For | Training, sport, everyday wear |
| XS | S | M | |
|---|---|---|---|
| EUR | 27.5–31 | 31.5–36.5 | 36.5–42 |
| CM | 16.5–19 | 19–23.5 | 23.5–26.5 |
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