Tantrums: trail gear for when it gets really long

After ten kilometres you can still ignore a lot of gear. After a hundred kilometres you feel every bounce, irritation and awkwardly placed pocket. Tantrums develops hydration packs and performance gear specifically for trail runners and endurance athletes, with a clear philosophy: no gimmicks or unnecessary details, but gear that almost becomes part of your body during long efforts.

That makes Tantrums interesting for ultra runners, long mountain days and trail runners who would rather choose their kit right once than keep adjusting it on the way.

Why a Tantrums hydration pack?

A good trail vest should carry enough without you constantly noticing that you're carrying something. That's why Tantrums focuses strongly on stability, freedom of movement, accessible storage and carrying comfort during long efforts.

The Roam 11, for example, is designed for the longest races and self-supported mountain days. Its 11 litres offer room for food, clothing and mandatory race kit, while the construction is meant to spread weight across your back and limit bounce. Up front there's room for two 600 ml soft flasks, and a 2-litre reservoir fits at the back.

The result: less fuss with your vest, more attention for pace, fuelling and the trail ahead.

Gear that has to prove itself over the long haul

Tantrums positions itself firmly at the tough end of trail and ultra running. The brand develops its gear for the longest races and self-supported mountain days.

Of course that doesn't mean you have to run 400 kilometres yourself to benefit from this gear. It mainly shows what kind of use Tantrums is developed for: long hours, lots of kilometres and as little room as possible for irritation or gear problems.

Which Tantrums pack suits you?

Look mainly at how much you need to carry yourself. For shorter trails and races with aid stations close together, a compact vest is often enough. If you're going longer, running in the mountains or need to carry extra food, layers and mandatory kit, more volume gives peace of mind.

The Crest 6 Hydration Pack is on the compact side at 6 litres, while the Roam 11 Hydration Pack is clearly developed for longer races and adventures where you need to carry more yourself.

So don't automatically choose the biggest vest. Choose the volume that lets you carry everything safely, without hauling unnecessary weight along the trail for kilometres.

Tantrums for trail running and ultra running

Tantrums is interesting if you look beyond weight or litres alone. The brand builds its gear around a simple principle: when your body and mind are struggling, your gear must not become an extra problem.

Do you run long trails, ultras or mountain adventures and are you looking for a hydration pack that fits snugly, is practically laid out and is designed for hours of use? Then Tantrums fits right into that segment.

Frequently asked questions about Tantrums

What is Tantrums?
Tantrums is an American trail running brand that develops hydration packs and performance gear for trail runners and endurance athletes.

Is Tantrums mainly for ultra running?
The products focus strongly on long distances and endurance, but are also suitable for regular trail training and mountain days. The concept really comes into its own when stability, enough storage and long-lasting comfort matter.

Can I combine soft flasks and a reservoir?
With the Roam 11, yes: two 600 ml soft flasks fit up front and a 2-litre reservoir at the back.

How many litres do I need in a trail vest?
For shorter races, less volume is usually more pleasant. For long ultras, mandatory kit or remote mountain trails, a bigger vest such as an 11-litre model gives more room for food, drink and extra clothing.