3M7502 Twin Filter Half Mask RespiratorThe 3M7502 reusable lightweight twin filter half mask is designed for extra comfort with a soft silicone face piece. Its patented valve provides easier breathing while reducing heat and moisture build up, with a range of easy to fit filter options available to suit your individual applications. Lightweight silicon face piece Low profile design Cradle head harness Drop-down feature Patented valveUse with twist click filters: 22734, 22737, 22738 (filters not included).