We’ve been using Malabar Baby sleep sacks for a few weeks now and are very happy. Our twin daughters are 36 months and weight around 34lbs and the sacks fit perfectly, we're so happy we finally found an XL size! These sacks will last us through the summer and maybe even until next! Their bedrooms are around 70-72 degrees. Our girls wear the matching Pink City loungewear under the sleep sacks and sleep throughout the night without a fuss!