The Poppers Booster Cap XTRM SNFFR Twin Small by XTRM takes the use of poppers to a new level. You unscrew the original cap from the manufacturer and screw the Booster Cap on the bottle. With the Twin model you can screw on two 10ml bottles at the same time and use two poppers at the same time. You will quickly feel the difference. Another advantage is that with the Booster Cap you protect your skin from skin irritations and burns, because you have no direct main contact with the poppers. After use, it is mandatory to replace the original cap from the manufacturer to prevent leakage. Try the Booster Cap and write a product review on this page. The size Small is suitable for all 10ml and 30ml tall bottles from the manufacturer Lockerroom from Canada.