It is important that your boots are waterproof as all our courses will involve walking on snow-covered (wet) glaciers. Which boots you wear are governed by what course or trip you do. A heavier boot (B3 type) can be used for all alpine trips, but a lighter boot (B1), although being generally more comfortable, cannot be used on more technical trips, as there is not enough support to front-point in crampons for extended periods. A comfortable boot is really important and we recommend breaking-in your boots before joining one of our courses.
Adrian Nelhams has produced a short video which explains the different type of boots available