Coded as '200SF' Levis Plain Cotton Boxer Shorts, the stretch fabric underwear in this twin pack benefits from a 200-needle thread count, giving it a fine and soft feel, constructed for comfort with supportive, flatlocked seams (the ‘SF’ stands for ‘San Francisco’ BTW, the home of the Levis brand).This pack of boxer shorts contains two contrasting coloured pairs, topped by elasticated waistbands with bold Levis branding to the front. Levis Plain Cotton Boxer Shorts are a very natural, 95% cotton rich jersey blend with a seamed and shaped saddle seat for comfort, and 10.5cm inseam legs.