HydraPak
HydraPak Tempo Pro 525 ml Handheld Bottle
- Weight for its size: 8/10 How much it adds to your pack for the water it holds.
- Packed size (empty): 4/10 How much room it takes up when it is empty, for the water it holds.
Lowest price we found
£21.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 2 shopsTrail running and fast day walks with the bottle in your hand
- Type
- Rigid
- Capacity
- 0.525 L
- Weight
- 62 g
Packed size 0.69 L, 23.7 cm long and 6.1 cm across Compare with a 2-litre bottle
Shorter than a 2-litre bottle and thinner than one. Drawn to scale.
Where to buy
Ultralight Outdoor Gear £21.99 In stock. Free delivery. It lists 62 g and 525 ml.
View at shop: Ultralight Outdoor GearHydraPak £22 In stock. Delivery £3.60. Blue and White both in stock. HydraPak's UK shop. Free UK delivery over £50 on its shipping page (£75 on its shipping policy page); under that it is £3.60 by Royal Mail Tracked 48 or £6.00 by DPD next day.
View at shop: HydraPakPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Weight for its size
From maker's figures 8/10How much it adds to your pack for the water it holds. 8: Clearly better than most.
HydraPak lists 62 g for 0.525 L (UK and US pages agree): 118 g per litre, in the 100–179 g/L band (band 5 is under 100 g/L). Ultralight Outdoor Gear lists the same 62 g. HydraPak's material list includes the strap's neoprene, nylon and polyester, so the 62 g appears to cover the bottle and strap together, but its page does not say so.
Packed size (empty)
From maker's figures 4/10How much room it takes up when it is empty, for the water it holds. 4: A bit below average.
HydraPak does not say this bottle collapses: it describes an ergonomic squeeze bottle that also fits in a running vest, and we found no UK shop or tester giving a rolled size. We therefore draw it at its full size as a cylinder from its height and width, as for the rigid bottles. HydraPak gives 237 mm by 61 mm and does not say whether that includes the cap: 3.1416 x 3.05 x 3.05 x 23.7 = 693 cm³, so 0.69 L empty for 0.525 L held (1.32 L per litre), in the 1.3–1.79 band, only just. If the 237 mm includes the cap, the body is shorter and the score could be 3; we use the figures as published, which score lower.
In short
Good for
- Trail running and fast day walks with the bottle in your hand
- Short outings where you want a drink without stopping to open a pack
- Anyone who finds a squeeze bottle easier than a soft flask
Strengths
- 62 g for 525 ml, about 118 g per litre
- Sandal-cut strap wraps the wrist so you do not have to grip; adjusts for either hand
- Pull-to-open nozzle that HydraPak says is leakproof
- Full-length window shows how much is left
- Strap comes off and the bottle goes in the dishwasher
- Beyond Lifetime Guarantee on defects
Weaknesses
- HydraPak does not say it collapses: 0.69 L of room empty for 525 ml of water
- A running-style bottle (HydraPak lists it under running hydration), small for a day on the hill
- No independent test found, so ease of use and durability are estimates, not reviewed scores
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.