Conditions on Britain's tallest mountain are unforgiving all year round.
I took on Scotland's Ben Nevis last month, and despite it being June, temperatures were touching freezing, with biting winds up to 50 miles per hour (80.4kmph). There was also the constant rainfall, which was often light and occasionally very heavy.
I didn't get to the top in the end, but only managed to make it as far as I did because I was wearing some great kit, including my mountain-ready Helly Hansen shell jacket, which has had its price slashed on Amazon.
Right now, you can get your hands on the tough Odin 9 Worlds 3.0 shell for $360, way down from its list price of $450.
This hiking hardshell is made from 100% recycled polyamide materials and features Helly Hansen's 3-layer waterproof, breathable, and windproof system for maximum protection from the elements. It's also got a tight-fitting adjustable hood and snug soft fleece chin guard to keep the cold from entering via your neck.
The comfortable Odin 9 Worlds 3.0 served me extremely well in the bitter winds and repeated rain of Ben Nevis, and looks to be an excellent choice for high-altitude hiking.
This sturdy alpine companion is also available in women's sizes, for $450 on the Helly Hansen website.
This waterproof Helly Hansen shell kept me warm in freezing conditions on Britain's tallest mountain, and it's now up $90 off.
Don't worry if you're not in the US. You can look below for a great selection of Helly Hansen shell jacket deals from retailers where you are.
- The best waterproof jackets: brave the elements with these top-rated hard and softshells
- The best softshell jackets: protect against wind and cold on the trails
