cent-lok and Scent Blocker both use the same licensed carbon material........under the Scent-tek name and this license is owned by Scent-Lok. I am going with Goretex Suppressant, my first odor suit. According to Goretex, their garments can be washed regularly as opposed to the Scent-Lok which states on the clothing tags to wash 1-2 times a yr.