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).