Smatree
Nearly everything we make starts as a sheet of closed-cell foam pressed hot into a steel mould. It is worth understanding what that material does, because it explains both why our cases survive things and where their limits are.
Closed-cell foam, pressed hot
EVA is a foam whose bubbles do not connect to each other. Heat it, press it into a mould and it takes the shape permanently — stiff enough to stand unsupported, springy enough to deform under impact and return. That combination is why it replaced rigid plastic in this category.
Why it dents instead of cracking
A rigid box has one response to a hard knock: it transmits the energy, and past a threshold it splits. Foam absorbs the energy by compressing, then recovers. You get a temporary mark where a plastic case would have a permanent crack.
Why the corners are built up
Thickness buys compression distance. The corners take almost every drop, so that is where the extra material goes — our Super Corner reinforcement is simply more foam in the four places that need it.
Water: shedding is not sealing
Because the cells are closed, the material itself does not soak up water. That makes a case rain-resistant and, with enough volume, buoyant. It does not make it sealed: water goes in through the zip, not through the shell. We build floating cases and we build rain-resistant cases. We do not build dry bags, and we will not describe one as waterproof.
Heat, sun and time
EVA is happiest between freezing and a warm day. A case left on a dashboard in summer sun will soften and can take a set from whatever is pressing on it. It firms up again as it cools, but a deep crease left for a week may not come fully out.
Cleaning it
A damp cloth. Solvents and alcohol lift the surface coating and leave a dull patch that never evens out — the one maintenance mistake we see repeatedly.
What it smells like, briefly
A new moulded case has a faint factory smell for a few days. Leave it open somewhere ventilated and it goes. It is not a defect, and it is not something to seal in by storing the case closed in a cupboard on day one.