?Versatile Performance?The boys fleece thermal pants perfect for soccer, baseball, ice hockey, skiing,skating,snowboarding,basketball, football,pyjamas,cycling,lacrosse,softball,running,hiking,trips,campin and other sports activities in cold weather winter days.Put on our boys thermal compression leggings as perfect sports base layers under uniforms. ?Moisture-wicking?Moisture-wicking fabric wicks away sweat and dries fast to offers dry, comfortable wear during exercises.Smooth flat seams and tagless prevent chafing. ?Stretchy & Elastic waistband? 4-way stretch compression pants provides easy movement and flexibility.High elastic waistband provides comfort fit and prevents falling off.Compression-fitting style will retain body heat to keep you warm. ?Double Pocket Design?The boys thermal underwear with phone pocket is large enough to hold the phone, which is very stable. It can be used for putting keys, cash or other essentials when workout. ?Ultra Soft & Warm?These boy's thermal fleece lined leggings use stretchy inner fleece lined thermal material, inner fleece keeps your boys warm in cold days.Spandex add ed the durability and shape retention. Size Chart: Small=US Size 6-6X / Medium=US Size 7-8 / Large=US Size 9-10 / XL=US Size 10-12/2XL=US Size 12-14. Elastic closure. Imported. 95% Polyester, 5% Spandex.