Montane is renowned for producing lightweight and breathable outdoor clothing and they believe that their clothing thrives when tested to the absolute limits. Their waterproof jackets will certainly be tested if you're planning on spending a serious amount of time outdoors in the UK and especially if that time is going to be spent on hills and mountains. The lightweight Pertex shield used in the jackets below is fully waterproof and breathable as well as being extremely lightweight and packable so no matter where you're headed you can be certain that you'll be stay dry and wont be carrying unnecessary weight.