Inside diameter after inflation:

Arm ring

Outer diameter after inflation:

Roller Blue Dinosaur

Roller Meat Powder Cherry

Roller Orange Stripe

Roller Green Stripe

Roller blue stripe

Roller Love

Vintage Shell Pink Cherry

Retro Shell Beige Love

Vintage Shell Blue Dinosaur

Blue Spaceman (Normal)

Pink summer colorful (ordinary)

Yellow Dinosaur (Normal)

Pink Mermaid (ordinary)

Blue Spaceman (SNAP)

Pink summer colorful (buckle)

Yellow dinosaur (SNAP)

Pink Mermaid (buckle)

Blue splash ink arm ring (cylinder)

Pink splash-ink arm ring (cylinder)

Blue splash ink arm ring (triangle)

Pink splash-ink arm ring (triangle)

Pink Arm Circle

Orange arm ring

Plum Red arm ring

Blue Arm Circle