The Opna(tm) Your Performance Long Sleeve Shirt is designed with comfortable stretch fabric and set in sleeves that let your young athlete move comfortably in any sport. Moisture wicking fabric keeps them cool and relaxed even on the hottest days. The lightweight material is also great for layering for the colder or cooler mornings. This combination creates a great sharp athletic look that feels as comfortable as it is cool. Absolutely the highest quality best valued youth athletic shirt available. You won't be disappointed...all Opna shirts come with our 100% Satisfaction Guarantee.