Perfectly sized: at first I was a bit disappointed upon receiving my XL Tumbler because the XL part of the description made me think it was a 40 oz sized tumbler but this one is roughly equivalent to the 30 oz Stanley tumbler but as soon as I actually started to use it, I fell in love! I think this is a much more manageable size to hold and carry around with me on a day to day basis than what my 40 oz tumbler is. The quality of this product is so much better too! It feels so premium, the non slip base means that I can place this tumbler on top of the car and know it’s going to stay there and without scratching any paintwork whilst I pack and unpack my groceries. There’s no leakage when tipped onto its side with the straw lid which is fantastic news for someone who is clumsy like myself! Over Christmas, I’ve been away from home but I’ve also been quite poorly so this tumbler has really been my ultimate sidekick as it’s gone everywhere with me, helping me stay hydrated! Even when you don’t feel like eating or drinking anything, you soon don’t notice how much you’ve drank when you keep on taking small sips! I had to refill 3 to 4 times per day with water which has been great for helping my body heal.