The ultimate protection against mosquitoes and other flying insects! Fine No-See-Um Mesh. 100% Polyester. Lightweight and cool. Certified flame retardant. Full cut sizing maximizes protection. Elasticized drawstring waist and cuffs. Zippered at the neck for easy access to the face. Sizes: SM-fits up to 160 lbs., MED-fits up to 200 lbs., LG-fits up to 240 lbs., and XL-fits up to 300 lbs.