its supposed to block scent under the suit so it shouldnt matter whats under there. i didnt watch the video all i had to do was watch hunting shows. every day theres at least one guy wearing scent blocker or whatever other brand that gets totally busted. the last one i saw was one of the drury guys he wore the boots mask suit and got busted anyway. save the money and just stay as scent free as possible with detergents and soaps and sprays just as affective in my opinion. i havent been busted in at leasy 5 years maybe more and ive had plenty of deer downwind just gotta be careful with your clothing.