DUBS Acoustic Filters Review @ Technogog
 

"The Dubs are a compact size acoustic filter, which includes 17 individual parts made with material such as stainless steel, polymer foams and silicone. Housed within a discrete minimalist form factor the Dubs are something most people would mistake for wireless headphones other than earplugs. "

http://technogog.com/review/review-o...ustic-filters/