XPAC 64oz Double Wall Vacuum Insulated Stainless Steel Tumbler with Leak-Proof Lid - Fits Most 4" Car Cup Holders - Keeps Drinks Hot/Cold for Hours - Perfect for Travel, Office & Outdoor Activities

I just this for my night water (I love water, so I drink a lot of it). I was hoping it would fit in my car's cup holder, but nope! Which is for the best, as it's HUGE and I can barely handle it one-handed.Keeps drinks cold for a good while, so it's perfect. The straw is a bit thin, though.