Comfortable and resistant. Interior elastic waistband and front zip and button closure. Pockets on the sides and one on the back. The polyester fibers in the composition of this fabric come from recycling plastic bottles, which would take more than 1000 years to biodegrade. By recycling polyester fibers we are spending 20% less water than in the manufacture of common polyester. The cotton comes from BCI (Better Cotton Initiative) plantations that take care of the social and economic environment of the plantation and the people who manufacture it. This fabric has ecological textile certificates OEKO TEX STeP (Sustainable Textile Production) and OEKO TEX class 1 as a guarantee of sustainability.