Brand
A hydration reservoir and a sleeping mat, one documented with care and one barely described
The same badge covers a 2 litre hydration reservoir and a breath-inflated sleeping mat. Reading them side by side is instructive, because the mat is one of the better-described products on its shelf and the reservoir is one of the emptiest sheets on its own.
An air mat is longer and wider lying flat than it is once it is full, because the tubes take up length as they inflate. The Alpenwert listing publishes both states: 225 by 70 cm flat, 190 by 60 cm inflated. That distinction decides whether a tall sleeper’s heels are on the mat or on the ground, and most listings on that shelf give one figure and leave you to guess which. A stated 531 g and a 40D material sit alongside it, with a repair kit in the box.
No thickness, anywhere. No R-value, and no standard named. A mat that publishes its footprint to the centimetre and never says how far off the ground it holds you is a mat chosen on length and weight only. Warmth on cold ground has to come from the bag, because nothing on the page describes what the mat contributes.
The other listing publishes a capacity — 2 litres, with a 3 litre version stated to exist — and a drinking hose in the box. That is close to the whole of it. The opening is called large and never described, so whether it can be turned back for drying is unknown. No film material, no seam construction, no bite valve, no shut-off, no coupling and no empty weight. On the shelf where the cleaning question decides whether a bladder lasts a season, every line that would answer it is Not published on the listing. If you are replacing a reservoir and the pack sleeve is the only constraint, that may be enough; if you want to know what you are buying beyond two litres of volume, it is not.
531 g · 190 × 60 cm inflated and 225 × 70 cm flat · 40D material · inflated by breath · repair kit included · no R-value
A 531 g mat that publishes both its flat and its inflated dimensions — an honest distinction most listings skip — and no thickness and no R-value.
Best for: Lightweight trips where 531 g and a 190 cm sleeping length are the specification, and warmth comes from the bag.
≈ 40 €
2 L reservoir · large opening, type not named · hose supplied · almost nothing else published
A 2 litre reservoir sold with a hose, whose listing publishes the capacity and then almost nothing else — no opening type, no film, no valve, no fittings and no weight.
Best for: A replacement reservoir where the pack sleeve is the only constraint and the details are worked out on arrival.
≈ 25 €
Prices in these summaries were read on the dates each review gives. The live figure sits beside every product.
