The plunger is designed for one-handed ease of use. With the convenient finger loops you can fill the applicator with whatever liquid you want and inject with one simple thrust. The XL size holds over twice the amount of lube of most launchers, so you can get the job done with less steps! Made of premium silicone, this lubricant applicator is compatible with water-based and oil-based lubricants only. This non-porous and phthalate-free material cleans easily with mild soap or toy cleaner.