Thank you for viewing! (^-^*) 30 silicone rings, no hardware, colorful Size: See photo 2 You can easily attach your favorite parts to create: Umbrella markers Water bottle markers Charms, etc. If you would like to add more, they are 30 yen each. Please comment if you'd like to add more! (*'▽'*) Also, items that can be shipped together will be discounted by 100 yen from the second item onwards. Thank you! (^^)