这种新型气凝胶因其超轻重量和隔热性能被用于制作冬季服装。

This new type of ___aerogel is used in winter clothing due to its ultra-light weight and thermal insulation properties.

这种气凝胶材料虽然看起来很大，但实际上轻得几乎感觉不到重量。

This piece of ___aerogel appears bulky but is so light you can barely feel its weight.