The mens Pack-it is an unlined packable overtrouser. Its your emergency wet-weather trouser built on over 30 years experience in outdoors clothing. Made from Isolite fabric technology to provide lightweight, waterproof, breathable and wind-resistant protection. Keep them in the handy stuff sack and stow them in daypacks, backpacks, car boots, desk drawers, kitchen cupboards, wherever suits. 100% Polyester. Regatta Mens Overtrousers Sizing (Waist Approx): XXS (26-28in/66-71cm), XS (28-30in/71-76cm), S (30-32in/76-81cm), M (33-34in/84-86cm), L (36-37in/92-94cm), XL (38-40in/97-102cm), XXL (42-44in/107-112cm), XXXL (46-48in/117-122cm), XXXXL (50-52in/127-132cm). Ref: UTRG902