These mugs have a tapered profile, sitting wider at the base and angling in for a narrower opening. Many say this narrower opening keeps your beverage hot longer - I’ve never done a side-by-side comparison to verify the claim but they are delightful to drink out of. Each mug holds 14-16oz and measures approximately 4.25” tall by 3.25” wide at the rim. — Handmade from start to finish; dishwasher and microwave safe.