Potential aerogel application: low-VOC washable waterproof sleeping pads "Are there any closed cell foam sleeping pads with an R-value of 3 to 4? Tips on hacki

Potential aerogel application: low-VOC washable waterproof sleeping pads "Are there any closed cell foam sleeping pads with an R-value of 3 to 4? Tips on hacking non-inflating pads to make them more winter proof?" (2023) r/Ultralight https://www.reddit.com/r/Ultralight/comments/16h19h1/are_there_any_closed_cell_foam_sleeping_pads_with/ https://www.reddit.com/r/Ultralight/comments/16h19h1/are_the... What is the difference in R-value of (sleeping pads) with these materials? - Add high R-value reflective tape to the ground side - Add a mylar emergency blanket -like windshield sunscreen below the pad - Double the (closed cell foam) pads - Add aerogel to the (closed cell foam) manufacturing process - Add aerogel to XPS Extruded Polystyrene Criteria: Recyclability, Washability, Waterproofness, Mass, R-Value,