The upper is made with a seamless construction method that incorporates a QB3 waterproof material with a thermoplastic covering through which the eyelets are formed. A deep rubber rand encloses the boot and there’s a very aggressive Vibram sole unit with deep, widely spaced lugs underfoot and a smooth climbing zone under the toe. 5/5
The La Sportiva Cube GTX is available in sizes 37-48 for men and 36-42 for women. The fit is neat and precise and narrower than some, particularly at the toe. The ankle cuff is slightly lower than most other boots here but is slightly more restrictive too as it does not flex like some options. Overall this gives the boot a feeling of a closer fit. 5/5
There is less padding but the neat fit is comfortable. As the toe area is slightly less spacious it feels more restrictive. This boot only weighs 1736g and this improves the comfort as it does not feel ‘clumpy’. This boot is stiffer than most 3-4 season boots and is more of a 4-season boot, which makes it less comfortable when walking below the snowline. 4/5
The 4-season stiffness makes the La Sportiva Cube GTX ideal for use on snow when edging and kicking the toes in. Also its neat and precise toe area is ideal for scrambling, climbing and mountaineering. Add in that low weight and this boot is stunning for use on snow. But that stiffness limits comfort and performance below the snow, making it feel ‘clumpy’ compared to softer-flex boots. 4/5
The La Sportiva Cube GTX is a great price for a stiff boot of this weight, but for 3-4 season use you needn’t spend £275. 3/5
A superb 4-season mountaineering boot, but below the snow others are better overall.
Review by Graham Thompson
Published in Trail magazine December 2014