If you need a supportive base layer ready for you to tackle the action then look no further than this adidas Alphaksin Sport L/S Compression T-Shirt in Dark Blue.

This alphaskin tee is not like your traditional base layer top but comes in a pre-shaped construction designed to match the body's movement no matter what the exercise may be. This training shirt provides light compression for a supportive feel. It has been made using breathable, quick-drying fabric that also has built-in UV protection from the sun's harmful rays. 

Tight fit is snug through the waist, hips and arms
Crewneck
Long sleeves
83% recycled polyester & 17% elastane doubleknit
Supportive FreeLift Pattern; Alphaskin for a locked-in feel
Mesh back panel; Shaped hem; Ergonomic cut lines
Climacool ventilation