Six of the boots tested are heavy, stiff, one-piece classic leather models that I think are most suitable for use in snowy conditions when crampons will be worn much of the time. Of these boots the Tethera is the lightest, just, and the only one that comes in width fittings, a major plus point. Unsurprisingly I needed the widest fit. Alt-Berg also provides a made-to-measure service if none of the stock sizes fits properly. 

The Tethera is made from top quality leather with a Sympatex lining. The ankle and instep area are well-padded. Overall these are warm boots.  The tongue is sewn-in right to the top so you have to step into water more than 15cm deep to get wet feet. Breathability is okay in cold weather but in warm conditions my feet soon overheated. The sole grips well and the cushioning is excellent. There’s a rocker shape to ease walking. Even so, the stiff sole is noticeable. A protective rubber rand runs right round the sole and there are hard toe and heel bumpers. 

For those who like stiff boots and for winter mountain use these are excellent boots. The price is high but the boots are well-made and should prove very durable.

First published: Sept 2014