Sondico Long Sleeved Core Base Layer Junior - Blue - Size: 9-10

A base layer like the Sondico Long Sleeved Core Base Layer is designed to be worn directly against the skin to regulate body temperature, wick away sweat, and provide muscle support through compression. This helps keep the wearer comfortable, dry, and performing optimally during physical activity.

The Sondico Long Sleeved Core Base Layer is designed for a compression fit, meaning it should feel snug and close to the body, almost like a second skin. It should not be loose or baggy, but also not so tight that it restricts breathing or movement uncomfortably. It is designed to be true-to-size.

While it can technically be worn alone, it is primarily intended as an undergarment to be layered beneath a sports jersey, training top, or other outerwear. Its function is to provide comfort, warmth (or cooling), and support as a foundation layer.

Optivent technology refers to a fabric design that enhances breathability and moisture-wicking properties. It's engineered to allow air to circulate effectively and quickly move sweat away from the skin to the fabric's surface, where it can evaporate rapidly, keeping the wearer dry and comfortable.

The base layer is machine washable. It's best to wash it with similar colors on a cool or delicate cycle (typically 30°C) and avoid using harsh detergents or fabric softeners. Always check the care label inside the garment for precise instructions. Do not tumble dry; air drying is recommended to preserve the fabric's elasticity and shape.

Base layers are versatile. In cold weather, it adds an insulating layer to help retain body heat. In warm weather, its moisture-wicking and breathable properties (Optivent technology, mesh panels) help to keep the wearer cool and dry by facilitating sweat evaporation. It's an effective layer for diverse conditions.

The main fabric is typically 92% Polyester and 8% Lycra. Mesh panels consist of 82% Polyester and 18% Elastane. The 'M.Grey' variant has a slightly different shell composition of 90% Polyester / 10% Lycra. This blend provides durability, elasticity, and comfort.

While it is designed for a compression fit, it should not be painful. Double-check that the correct size was purchased using a sizing guide. If the size is correct but discomfort persists, consider if your personal preference aligns with a compression garment. Ensure no fabric bunching is causing localized pressure.

Ensure you are strictly following the washing instructions on the care label. High water temperatures or aggressive wash cycles can degrade the Lycra/elastane fibers. Avoid using fabric softener, which can sometimes coat the fibers and reduce their elasticity. Air dry instead of using a tumble dryer, especially on high heat.

First, ensure the base layer is clean and completely dry before wearing. Make sure the garment is worn smoothly without creases. If irritation continues, check for any detergent residues if you're using a new detergent, or if you have a sensitivity to polyester or elastane. Rarely, a misstitched seam could be the cause; inspect the garment.

This can happen with synthetic fabrics. Try washing with a sports-specific detergent designed to tackle odors. You can also pre-soak the garment in a solution of white vinegar and water (1:4 ratio) for 30 minutes before washing, then wash as usual. Ensure it is thoroughly dried immediately after washing.