Wildo Fold-A-Cup Review

Overview

The Wildo Fold-A-Cup is a one-piece, BPA-free TPE cup that pops open to a drinking vessel and collapses to a flat puck, made in Borås, Sweden for more than three decades. It is aimed at backpackers who want a dedicated cup for coffee, tea or a rehydrating meal without paying for it in ounces. The trade-off is plain: the Original holds a small pour and does nothing to keep a drink hot, while the 600 ml version fixes the volume and gives back some of the packability.

Key Specs

Spec	Value
Weight	25–47 g (0.9–1.7 oz) depending on version
Capacity	250 ml (Original) / 600 ml (Big)
Folded height	2.5 cm (Original) / 4 cm (Big)
Folded dimensions	9.5 × 7 × 2.5 cm (Original) / 12 × 10.5 × 4 cm (Big)
Material	TPE, BPA-free
Temperature range	-20°C to +100°C
Dishwasher safe	Yes, up to 70°C
Made in	Borås, Sweden

Performance

The party trick is the fold. The upper half inverts inward to collapse the cup flat, then snaps back into shape when pulled open. It works as advertised, and the fold has a second benefit: it traps the last drips, so a wet cup doesn’t leak into the rest of the pack while camp is being broken down.

Heat is the test that matters for a plastic camp cup, and the TPE passes it. Owners report that the cup stays rigid with boiling water poured straight in, with no sagging or deforming. The stiff rim doesn’t burn the lips, and the small handle doesn’t go floppy when hot. A textured surface helps in wet hands, and the wide base keeps the cup upright on a rocky camp table, a small virtue that gets more appreciated at dusk with a full cup.

The walls are thick enough to spare fingers from a hot drink, though testers comparing it against other cups noted more heat reaching the hand than with some alternatives. The handle folds away neatly and helps with that. Heat retention is another matter: there is no insulation to speak of, so coffee goes lukewarm in minutes.

Taste is rarely an issue. Most users report no plastic flavor even with boiling water, and some who expected one say they never noticed it. A few reports of a faint aftertaste exist, usually fading after a few washes.

Capacity is the Original’s real limitation. It holds 250 ml to the brim, and closer to 200 ml if the cup is to be carried without spilling. That is a modest pour for a coffee drinker, who will be going back to the pot. The Big addresses this directly. Its 600 ml volume handles a proper mug of coffee, and users also treat it as a small bowl for soup, cereal or freeze-dried meals. It carries 100 ml volume markings, which is handy for measuring water at camp.

The design has a pedigree beyond the trail. It is standard-issue kit for the Swedish military, and designer Tom Dixon included it in his book Rethink.

Choosing a Version

The two versions share the same design, material and fold. What changes is volume, size and weight.

Original (250 ml, 25 g, 2.5 cm folded). The cup for hikers who want the smallest possible footprint. It slips into a hip-belt pocket and gets forgotten until needed. It suits a tea or coffee sipper, a second cup for a partner, or a backup vessel that costs next to nothing in weight.

600 ml (Big, 47 g, 4 cm folded). Wildo says it is designed so that the Original nests in its center when both are folded, so a group can carry both as a set without much extra bulk. It is 22 g heavier and 1.5 cm taller folded than the Original. Solo hikers who want a full mug of coffee, or a vessel that doubles as a soup or cereal bowl, should buy this one and skip the Original. Anyone who only ever drinks a small cup of tea will find it oversized.

Pros & Cons

Pros

• 25 g for the Original, 47 g for the Big; either is easy to justify
• Folds to 2.5 cm (Original) or 4 cm (Big)
• Holds up to boiling water without deforming
• One-piece construction leaves nothing to lose or break
• The fold seals in residual drips
• Textured grip, stiff rim and a stable wide base
• The Big has 100 ml markings and works as a bowl
• BPA-free TPE, dishwasher safe, made in Sweden

Cons

• The Original’s 250 ml is a small serving, closer to 200 ml for walking it around camp
• No heat retention; hot drinks cool quickly
• Small handle can feel fiddly in larger hands
• The Big is 22 g heavier and noticeably bulkier than the Original
• Some users report a faint aftertaste early on

Who Should Buy This

The Original suits the hiker who wants a cup for a hot drink and nothing else: the tea drinker, the person running a pot-cozy setup who wants something to sip from while the next meal rehydrates, or anyone wanting a flat backup cup. It is also a practical extra mug for small groups. The 600 ml Big is the better buy for solo hikers who want one vessel for coffee, soup and breakfast, or who want to eat out of something other than the pot. Anyone who wants a drink to stay hot should look at an insulated mug or a titanium cup with a lid. Those who carry only a stove and a pot will find a cup an unnecessary luxury.

Verdict

The Fold-A-Cup does one job and does it better than almost anything else at this weight. At 25 g and 2.5 cm folded, the Original costs almost nothing to carry, and the Big gives a full mug or bowl for 22 g more. The small serving of the Original and the lack of insulation hold it back from a higher score, but for a backup cup or compact hot-drink vessel, it’s hard to beat.