A composite comprising a non-fibrous organic polymer aerogel layer having a first surface and an opposing second surface and a support layer having a first surface and an opposing second surface is disclosed. An interface can be formed between a portion of the first surface of the aerogel layer and a portion of the second surface of the support layer such that the aerogel and support layers are attached to one another. A majority of the volume of the aerogel layer does not have to include the support layer. The composite can have a thickness of 3 mils to 16 mils.