Indeed. Popular materials for this "envelope" are nylon fabric or mylar =) | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

dTal on Nov 3, 2021 | parent | context | favorite | on: Can helium be mixed with hydrogen to form a non-ex...

Indeed. Popular materials for this "envelope" are nylon fabric or mylar =)

goohle on Nov 4, 2021 [–]

Never heard about 10cm thick mylar or nylon fabric envelope.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact