Yakkay's "brainwear" hat-style helmets launch  - photo 1Yakkay's "brainwear" hat-style helmets launch  - photo 2Yakkay's "brainwear" hat-style helmets launch  - photo 3Yakkay's "brainwear" hat-style helmets launch  - photo 4Yakkay's "brainwear" hat-style helmets launch  - photo 5