MK1 UndergarmentTabs Description Breathable, moisture-wicking, polypropylene Micro Fleece Spandex content results in extreme stretch; no need for king sizes Smooth Lycra stirrups & Elastic Thumb Loops Rear convenience flap 2-way torso/relief zipper Non-corroding YKK zippers Designed as a wicking base layer or a primary layer in warm tropical waters (70F-80F waters) Specifications Part # Description Size 611680 Glacier MK1 One Piece XS 611676 Glacier MK1 One Piece S 611674 Glacier MK1 One Piece M 611672 Glacier MK1 One Piece L 611678 Glacier MK1 One Piece XL 611670 Glacier MK1 One Piece 2XL