Thank you so much for your feedback and purchase! The one-size bonnet was designed after customer feedback found that people found a toggle to tighten the elastic uncomfortable to sleep in. You might like to try another way of making the bonnet a more comfortable fit, including rolling up the band. We're surprised to hear your curls are dropping - that's the opposite of what happens to most customers! Are you ensuring that your hair is fully dry before sleep and/or allowing your curls to settle for a bit after taking your curls out of the bonnet first thing in the morning and then refreshing? Others prefer to use a silk scrunchie and tie into a pineapple and use a silk pillowcase and then refresh, perhaps this may be a better routine for you? Let us know how you get on and thank you again, Team Olew x