Hydroflask or Yeti? Stanley Master series. : r/BuyItForLife
Master Unbreakable Hip Vacuum Flask | 8 oz | Stanley
Amazon.com: Stanley The Unbreakable Master Series Vacuum Trigger-Action Mug .35L Foundry Black 18/8 Stainless Steel Quadvac™ Insulation Leakproof Packable Naturally Bpa-Free: Home & Kitchen