Shower Protection
Ratings of 2 and 3 indicate that the jacket can offer protection during a shower with 6-12 cm of rainfall in 1-2 hours.
Thunderstorm Protection
A rating of 4 indicates that the jacket can offer protection during a thunderstorm with 30 cm of rainfall in 3 hours.
Storm Protection
A rating of 5 indicates that the jacket can offer protection during a storm, with 1.8 m of rainfall in 4 hours!

We offer 2 kinds of hiking jackets: Lightweight jackets and warm jackets. Lightweight jackets are unlined or only have a lightweight lining so they are worn in warm weather, in mid-season or in winter with a warm layer such as a fleece or micro-padded jacket.
In cold weather, you should choose a warm jacket with a warm lining; some of these jackets have a detachable lining and are called "3-in-1" jackets. This means that, depending on the temperature, you can remove the inner layer (either a fleece or padded jacket zipped to inside of jacket) and convert it to a lightweight jacket.
Finally, the last criterion to consider is the intensity of your hike. The more intense the hike, the more you'll sweat which means you'll need a ventilated jacket. When there's a ventilation zip, we talk about mechanical ventilation. These are generally located under the arms but some pockets also have mesh which helps perspiration wicking.
For improved ventilation, wear breathable clothing under your jacket and remember to leave the cuffs and bottom of jacket unfastened.
If you plan to walk in the rain for a long time, wear a poncho over your jacket which will provide complete waterproofing and help protect your backpack!