Do the posh external ones prevent condensation inside?
Ta

They work better than internal ones I don’t think you can avoid condensation completely unless you leave a window or 2 open. we have some from silver screens in Cleckheaton

Where are you in Cleck?

That’s where I was looking. How bulky are they when folded?

mugboo not in cleck live in Rawdon. boxelder they go pretty flat and come in a bag and are about 30″x18″x3″ when packed.

External ones are a faff if you need to make a quick get away from a cheeky camping spot. 8)
Stoner has made his own out of foil insulation and pound shop suckers.

The external one do banish condensation yes, they keep the glass at the same temp as the inside. the stick on the inside ones keep the heat in but the glass gets cold so you end up with a really wet dash in the morning.

I have ones from Taylormade and they’re great, more bilky than internals but work a lot better, take no time at all to fit and remove.

External ones from silverscreens – very impressed. Bought second hand, but they’re obviously new. Perfect fit and no condensation.

just ordered a set of used ones for my T4