The Under Armour Y Performance Tech Junior Socks come in a convenient 3-pair pack, made from a fast-drying, moisture-wicking fabric that keeps young athletes comfortable during training sessions and everyday activities alike. The Moisture Transport System is a UA-developed technology that actively pulls sweat away from the skin to the outer surface of the fabric, where it can evaporate quickly — keeping feet drier for longer. UA Tech fabric delivers a lightweight feel with an ultra-soft, natural touch for all-day, unrivalled comfort.
The Moisture Transport System is Under Armour's proprietary sweat-management technology built into the fabric itself. Moisture-wicking fibres actively draw perspiration away from the skin and push it to the outer surface of the material, where it can evaporate rapidly. The result is feet that stay noticeably drier and more comfortable throughout the entire workout or school day. For growing athletes who are constantly on the move, this technology makes a real difference in preventing blisters and skin irritation caused by damp socks.
The new Locked-In Fit design features a specially engineered heel construction that grips the foot and prevents the sock from slipping, sliding, or bunching during movement. Once on, kids can focus entirely on their activity without stopping to readjust their socks. Whether sprinting on the pitch, jumping in PE class, or simply running around at play, the sock stays exactly where it should be — delivering a distraction-free, adjustment-free fit from first step to last.
Strategically placed medium cushioning covers the full footbed, providing a protective layer between the foot and the shoe. This targeted padding absorbs impact in high-stress zones — such as the heel and ball of the foot — reducing the risk of blisters, hotspots, and general foot fatigue. The cushioning is substantial enough to deliver meaningful protection, yet lightweight enough that it never feels bulky or restrictive inside the shoe.
Open-knit mesh panels positioned across the instep (top of the foot) create dedicated ventilation zones that allow warm air to escape and cooler air to circulate. This enhanced breathability works in tandem with the Moisture Transport System to regulate temperature inside the shoe, helping feet stay fresh and comfortable during intense activity. The mesh construction also contributes to the overall lightweight feel of the sock.
A dedicated arch support band is knitted directly into the sock structure, providing consistent, gentle compression around the mid-foot. This supportive zone helps stabilise the arch with every step, reducing muscle fatigue that can build up over long periods of activity or wear. For junior athletes spending extended hours on their feet — in training, at school, or during competitions — this built-in support helps them stay more comfortable for longer.
The sock is constructed from UA Tech fabric — a lightweight polyester-dominant blend (98% polyester, 2% elastane) that combines performance properties with an ultra-soft, natural feel against the skin. The high polyester content maximises moisture-wicking capability and durability, while the elastane component ensures a flexible, form-fitting stretch that moves with the foot rather than against it. The result is a sock that feels great from the first wear and holds its shape wash after wash.
| Material | 98% Polyester, 2% Elastane |
|---|---|
| Pack Contents | 3 pairs |
| Colour | Black |
| Intended Use | Training, sport, and everyday wear |
| Technology | Moisture Transport System, UA Tech, Locked-In Fit |
| Available Sizes | XS, S, M |
| 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 |
No additional properties are available for this product.
Your review will help us and other customers when buying this product.
