Plastic Bottle Cap

I created this bottle cap to identify which one is my bottle when I'm playing badminton at the court. This cap also helps open the bottle easier. Only 1 problem is not all plastic bottle has same size of cap so you may have to resize this a bit. This model work with 30mm cap. I suggest you to resize this to be a bit fit so it won't come off when you open the cap. NO SUPPORT NEEDED