Will we ever see an "XL" sleep band size?

Our 13 month old is 99th percentile for weight and 93rd percentile for height. He has a healthy belly and the large bands barely hold on without us pre-stretching them quite a bit. Sometimes they pop off over night.

The L bands say 3-24 months and up to 30 pounds on them. Can we pleeeease have an XL or an extension piece like airlines have for larger passengers. 🙂