Submitted by lostdragon05 t3_10xw1l0 in BuyItForLife
dinnerthief t1_j7x9dv8 wrote
Reply to comment by meaty87 in BIFL Coffee Bros, Yeti Cup and Mueller French Press by lostdragon05
A air layer would work very well for insulation as well but now I'm curious if yetis truly have a vacuum and how much of one.
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