Very sturdy and keeps my water cold all day!This thing is great keeps water cold for a couple days.Keeps drinks cold or hot for a long time. Color is pretty and shimmery. Will be great for the beach! Would be better if it had a lid that had a sipper option and a place for a straw. Don't like the internal straw.Didn’t know we could love a water bottle so much! This is a very handsome bottle with its textured matte black exterior and embossed Ice Shaker logo. It has a flip up straw and carry handle so it would be perfect for the gym to hold pre-work or protein powder. The stainless steel interior has measurement markers in 5oz increments starting at 5oz going to 20oz. It worked well at keeping liquid cold for well over a day with ice included. The stainless steel provides a very clean taste and no lingering odor from beverages after cleaning.This would make a great gift at a reasonable price. Highly recommend!I've owned different sizes of Thermos--even my kids' water bottles are Thermos, and they hold ice pretty well and long enough for you to enjoy it. This Ice Shaker Sport Bottle holds ice forever-and-a-half! Upon arrival, I opened it, rinsed it and filled it with ice. Left it at my desk and did not open it for 24 hours. I checked it the next day, and, sure enough, almost the same amount of ice was still in it. Impressive! This definitely outperforms my Thermos!Oooooh! Double walled steel water bottle with screw off top seeks to impress! The outside is textured black with rubber bottom and large imprinted ice shaker logo. The interior is stainless steel with a measuring bar in both ounces and milligrams, holds just over 26oz. This keeps your drink cold for up to 30 hrs! This can also be used for hot liquids if desired. The top is plastic and you can drink using a flip up mini straw which moves easily. The top has a small carry handle which can be moved to the down position when not in use. This comes in several colors and can be customized with your logo. Simply WOW! This water bottle looks like a real star!