Let's face it there are a lot of shakers on the market. Why spend your hard earned money on a PerfectShaker?
• Stay-open flip cap
• Extra wide mouth 
• Screw on lid, without rubber seal and leak free! 
• Easy to use, easy to clean, dishwasher safe
• Light weight and portable
• Fits in most drink holders
• Mix, pour, store All in the same container