Sankaku Channel/muscular arms

All or part of one or both upper arms, with good size or good definition of any of the upper arm muscles (biceps, triceps, brachialis, coracobrachialis .)

Should be muscular, but does not need to look like a bodybuilder. May be bare or tightly clothed. The arms can be in almost any position.

Related tags include muscle, muscular_shoulders, muscular_forearms, arms_up, arm_up, arm_support, spread_arms, crossed_arms, arms_behind_head and bound_arms.