Reviews over the
SiS 800ml

SiS 800ml
4.3 / 5
Average from 35 reviews
5
13 reviews
4
1 review
3
2 reviews
2
2 reviews
1
2 reviews

1 / 5

Bad product

- Jelmer, 6 September, 2025

Water bottle leaks somewhere between cap and cup. Not what you expect from a water bottle.

Pros & Cons

Large
Leaks under the cap
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5 / 5

Perfect Bottle!

- Robert, 18 July, 2025

To get 2 bottles for this price is perfect!

Pros & Cons

Price

5 / 5

Top product

- Glenn, 1 August, 2024

Fulfils all his expectations

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5 / 5

Ideal water bottle that is leak-proof and has a large drinking spout

- Reinier, 5 June, 2024

Ideal water bottle that is leak-proof!

Pros & Cons

Content is visible
Large spout
Leakproof
No
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5 / 5

Large-volume water bottle, ideal for indoor use

- Jasper, 10 December, 2023

Does what it is supposed to do: provide me with water. Comfortable and leak-proof drinking cap. Does not fit inside my MTB frame, but I knew that beforehand. I mainly use this to put next to me when biking indoors on the trainer. Then a large-volume water bottle comes in handy. And these meet the requirements just fine. Furthermore, I find transparent water bottles very handy when cleaning, as I don't put them in the dishwasher.

Pros & Cons

Finally hydrated again on the bike
Large volume, ideal for indoor use, for example
Leakproof when lying down
Large water bottles do not fit inside every frame
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1 / 5

This water bottle leaks

- Mats, 23 October, 2023

Leaks enormously hard. Fully screwed up, it leaks immediately when you squeeze the bottle a little. My bike is soaking wet from leaking.

Pros & Cons

Leaks huge
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3 / 5

Pay attention with multiple formats!

- Johan, 27 June, 2023

Fine bottle and especially large. Nice that multiple sizes are available. In combination with frame bag sometimes need small bottle. Nice that it looks the same. Unfortunately, the caps of the 800ml and 600ml bottles are not interchangeable. That will be a problem on longer trips where you load the car at home and fill the bottles at the destination...

Pros & Cons

Easy Drinking
Large
Transparent
cap not compatible with 600ml SIS bottle
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5 / 5

Satisfied with this purchase

- Steve, 23 May, 2023

Very pleased with these drink cans!!! Happy with the purchase

Pros & Cons

Cool look
Does not leak
Good size
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5 / 5

Fine non-leaking water bottle

- Marjolein, 22 May, 2023

These water bottles are nice and big. Most importantly, they do not leak and there is no crazy taste.

Pros & Cons

Do not leak
Fine in the hand
Large capacity
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5 / 5

Excellent, leak-proof water bottle

- YANNICK, 21 July, 2022

Perfectly sealed flange

Pros & Cons

Watertightness
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5 / 5

Good practical water bottle

- Pauline, 15 July, 2022

Translucent so good to see what's left inside and good to clean properly

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4 / 5

Just right

- Jarno, 3 January, 2022

Nice bottle, no weird plastic taste, transparent so you can see how much you have left and how long you can last. Also good that it's an 800ml version so don't run out of your sports drink quickly. Couldn't find any downsides yet

Pros & Cons

Indication for proportions
Large capacity
Transparent
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3 / 5

Robust. Fast drinking not an option.

- Freek, 23 October, 2021

I still have to exert quite some force with my teeth to get the opening loose (a kind of twisting motion) to be able to drink. The bottle is easy to squeeze in order to drink enough (quickly).

Pros & Cons

Easy to squeeze
Firm
Difficult to drink
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5 / 5

absolutely top!

- Demi, 13 October, 2021

the water bottle is better quality than I expected

Pros & Cons

arrived quickly
good quality
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5 / 5

satisfaction

- Jérôme, 6 August, 2021

very good for a first purchase

Pros & Cons

fast delivery
prices
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2 / 5

regret buying

- Kirill, 1 August, 2021

Regret buying this bottle as the water in it gets a strong unpleasant smell and taste even after 10 rides use . Water is crucial for every cyclist and it is so disappointing that pleasure of refreshment is spoiled by chemical odour... especially from a brand with such a name.

Pros & Cons

Cheap
Terrible plastic smell and taste inside

5 / 5

Fine for the longer drive!

- Rick, 28 July, 2021

Pleasant water bottles for longer rides. In addition, they seal well, where many water bottles unfortunately fail to do so anyway.

Pros & Cons

Ideal for the longer ride
Price/quality
Seals well
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5 / 5

Best water bottle for me.

- Helene, 15 June, 2021

Very good water bottle, seals well, no crazy taste and well impressionable!

Pros & Cons

Closes well, also squeezable.
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5 / 5

Fine water bottles

- Bas, 16 May, 2021

Ordered 2 for on 2 Elite Custom Race bottle cages. They click in well. Sit tight, but are also easy to take out again. Drinking is fine, they squeeze fine

Pros & Cons

Fits well
Squeezing / drinking
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2 / 5

does not sit firmly in every drink can holder

- Bart, 30 July, 2020

Diameter is on the small side, making it easy to pop out of many drink can holders

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