Based on 3 r/BuyItForLife mentions

Rambler Stackable

$35.00

YETI

Description Ultra-durable mugs sized for strong brews and perfect pour. The Rambler 6oz Stackable Mugs are just the right size for a flat white on the deck and a cortado at camp. Plus, its DuraSip Ceramic Lining, Over-engineered firm grip-handle, and Stackability make it ideal for espresso machines, camp kitchens and beyond. Features Dishwasher safe. DuraSip Ceramic Lining. Stackable for easy storage. Fits Under Most Espresso Machines. 18/8 Stainless Steel. Compatible with Small Magslider Lids, Sold Separately. BPA free.

Reddit mentions

  • “They were Yeti clones for cheap and I'm not sure if they make identical ones anymore but they do still make the Yeti ramblers. They're the same price as Yeti now too…”
  • “The chug lids are screw tops and spill proof, provided you screw it on all the way. My husband and I both have the Yeti chug bottles. We like em because they’re dishwasher safe…”
  • “The Yeti 6oz stackable insulated mug with the little handle. After 2 years of daily use it's exactly the same as when I bought it - it fits perfectly under my espresso machine…”
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Product details
Type
Travel Tumbler
Brand
YETI
Capacity
7.98 fl oz, 8 fl oz, 15.99 fl oz, 16 fl oz, 16.06 fl oz, 19.98 fl oz, 20 fl oz, 26 fl oz, 29.99 fl oz, 30 fl oz