Customer Reviews Hydro Flask 21 oz Standard Mouth with Standard Flex Cap

Love my hydro ? Just need a little ice to keep things cool and hydrated all day long ? My cousin and cousin-in-law had hydroflasks on their wedding registry. I gifted a pair of the whites and it’s the perfect size to fit in a cup holder ??

Got it for my son this year in school! It has already taken a few tumbles and is holding up great. The wide mouth allows us to put ice in so it stays cold all day.

Dents easily. It slipped out of my backpack on my first day out and it dented in two places. Still functional and use it often but was disappointing.

My 13 yo has used 4 times. Dropped it twice and now dented and the plastic lid broke. Poor quality and over priced .

I have ordered 2 of these and they both leak! I am very disappointed in this product

I put ice cold water with extra ice cubes in my new Hydroflask on a warm summer day (temps in 80s) and in three hours the ice was gone and the water was merely cool. This was much worse performance than I've gotten from less expensive water bottles. I am very disappointed!

Holds ice all day and more depending on how much you put in it and as long as you keep it out of the sun. Fits into any cup holder I have. I have even dropped it and it still works great.

Love it. I was replacing the exact same water bottle that was stolen off my bike. Since it takes 2 hands to drink, it's not great for biking anyway so I bought the new Sport bottle as well. Unfortunately, because it's clearly metal, I was barred from bringing into a football stadium, but otherwise, it's been great as well.

Great product

Quality product.

Your service is top notch! I love hydroflask and recommend them to all.

Great size, easy to use

it helps me in my travels, and keeps me happy to be loyal to hydrofask as it goes on to keep a safer ecosystem... you lifetime warranty also keeps me a loyal customer... i alway speak the best of you and always share the benefits of being your loyal customer. Thank you always

I have purchased a number of Hydro-Flask containers for myself and as gifts over the years and they are the best at keeping liquids cold or hot! Great colors too!

This is a great water bottle: I love Hydroflask! It keeps things cold for several hours, and my ice even stays overnight. They have such fun colors too! Highly recommend!

Loved my Hydros can't wait to use them !

Keeps tea piping hot all day long in winter. Best thing ever to have hot tea at the end of a snowshoeing adventure.

Love the flask. The color is great. Perfect size for children or adults.

This was a gift for my grandson for Christmas. He asked for it and was very pleased to get it. That's why I gave it 5 stars. I didn't use it myself.

Works great does the job well. Keeps water fresh and cold

Good quality. Keeps my water cold even on hot summer days while riding my bike.

Unfortunately I only used it 2 times. I forgot it at the farmers market and it didn't show up in lost and found.:( I have another old dented up one I love so bought this. Funny thing is I bought replacement cap for the old bottle and the old cap showed up in farmers market shopping cart same day!

Excellent product. Very Easy to clean. Great quality!

Ice keeps the water cold for hours! Great for Maui honeymoon, vacations. Fits great in side backpack, cup holder, and easy to carry. We love our 21 ounce, it is the perfect size!'n

I bought these and absolutely love them, will keep your ice and drink perfectly all day, even in the hot Texas summers!