Using your Sea to Summit Passage Insulated Mug is a breeze. Just fill it up with your favorite hot or cold drink, snap on the sipping lid, and you're ready to go. When you're done, you can either wash it by hand or pop it in the dishwasher. It's also safe to use in the microwave, but make sure to remove the lid first. As for stacking, you can stack it with other Passage Mugs and Cups to save space in your bag. And if you're packing for a trip, it fits nicely into Passage Bowls or Frontier Pots. Just be careful when handling it, especially when it's full of hot liquid. Keep it away from sharp objects to avoid scratching the surface. With proper care, this mug will serve you well on all your camping and overlanding adventures.