These elastics are the same dependable elastics I use in my clinic. Guaranteed to move your teeth with braces or aligners. The only brand of elastics that are warrantied for defects and premature breakage. These little beauties are just the ticket for finishing double ended dreadlocks or open ended braids! Ortho Bands are very hard to break, unlike most of the clear bands on the market!! They are 1/4" in diameter when un-stretched. These are made with our Latex Free formula. Durable, clear, strong and dependable.