Quiksilver Mercury Gravity 21" Boardshorts Heavy water, long walls—Mercury Gravity holds its line. The 21" outseam and fixed waist keep things locked while SURFSILK delivers interior softness and exterior durability. Four-way stretch [170 g/m²] stays light. Straight fit, solid color, with contrast side panels and piping. Finished with Quiksilver rear embroidered applique and front woven label. Outseam: 21 inches (long). Fit: Regular. Waist: Fixed waist. Branding: Quiksilver rear embroidered applique and woven label at front. Contrast side panels and contrast piping.