SIS 800ml Narrow Neck Bottle Yellow - Yellow, 800ml

I’ve purchased three of the Science in Sport SIS Yellow bottles, and they continue to impress me every time. The bright yellow colour not only looks fantastic but also makes the bottle incredibly easy to spot, whether it’s in the gym bag or attached to my bike—no more rummaging around or losing your bottle during a busy session. One of the standout features is the waterproof and leakproof design. Thanks to the secure, lockable valve, I never have to worry about any spills in my bag or car—these bottles keep every drop where it belongs, even during hectic cycling or gym workouts. The flexible yet durable plastic copes well with drops and daily use, so it’s built to last and still feels comfortable to squeeze for a quick drink. The ergonomic shape makes it super easy to grip, and its flexibility is perfect for sports and on-the-go hydration. The bottle also features a wide neck for easy filling and cleaning, plus clear measurement markings, which save time when mixing up energy powders or electrolytes. After trying many different brands, I can honestly say these bottles are some of the best. They’re reliable, flexible, and their yellow colour makes them stand out from the crowd—a great choice for anyone who values both function and style in a sports bottle.

Always good quality water bottles and easy to clean had a few of these now and last a while even being used up to 4 times a week at football

I'm on my third purchase of this water bottle, and I have to say, it's the most high-maintenance relationship I've ever had. The first two bottles developed a leak after being dropped (which was totally my fault, by the way), so I had to order replacements. But even with the most recent bottle, I feel like I'm constantly on edge, waiting for the moment when it too will betray me. Don't get me wrong, the bottle itself is great. It holds water like a champ, and the design is sleek and attractive. But it's just not as durable as I'd like it to be. Maybe I'm just too rough on my water bottles, but it seems like nothing lasts as well as it used to anymore. That being said, if you're looking for a one that will be your ride or die, this might not be the one for you. But if you're okay with a little drama in your life, this bottle is definitely worth considering.

We get through so many water bottles as they all start to leak, we've had these a good few weeks now and are not leaking at all performance is great do excatly what they say in the description. well, we ordered 2 clear and 2 yellow and were very bight and colourful, large water capacity which was great as helps to keep sons hydrated for longer. No plastic taste either which is very good. Very versatile plastic which copes well with being dropped and placed in the dishwasher unlike many other bottles

A classic. Sturdy and reliable. Doesn’t develop odours. Easy to clean. Very easy to drink out of - not much squeeze at all is needed for a quick and full flow yet when the mouthpiece is closed it’s tight and secure enough to not have to worry about leaks in a bag even if upside down.

Love it..water dosnt taste like plastic..threw old bottle out

Excellent quality, durable, doesn’t look cheap, good value for money. Doesn’t leak.

Looks decent and for £5 i cant complain, well maybe 1 complaint ia the smell inside the bottle, I've washed it thoroughly and with baking soda and the smell is still there

Ottima borraccia a un prezzo accessibile. Leggera e facile da usare anche per bambini durante lo sport. È facile da pulire e il materiale sembra resistente. Consigliata

€4 each for a bottle was great deal on at the time. Relative drinks heaps of water & bedbound so 6 =€24 delivered :)

Used these for the bike leg of an Ironman race. They fit in the bottle cages well and they are easy to open with you mouth while riding. The optic yellow makes it easy to spot your bike during transition which is a nice added bonus.

Superbra flaska (800ml). Läcker inte och rymmer lagomt med vatten eller saft att ha på jobbet. Köper igen när jag behöver fler. Uppdatering 231118 - upptäckt att den läcker vid gängan där man skruvsr på locket. Mejlat reklamation idag då den inte var möjlig att returnera/återbetalas. Får se vad Amazon svarar.

simple cheap water bottle that works