| Position | Outermost layer |
| Job | Block wind and rain |
| Types | Hardshell, softshell |
| Protects | The layers beneath |
A shell is the outer layer of a clothing system, worn over insulation to block wind and rain. Shells range from waterproof hardshells for storms to breathable softshells for active use in dry, windy conditions. The shell protects the warm, dry layers beneath from the elements.
Two kinds
A waterproof hardshell (or rain jacket) for storms, and a breathable softshell for dry, active conditions.
In the system
The outermost of the three layers.
Frequently asked questions
What is a shell jacket?
A shell is the protective outer layer in a clothing system, worn over your base and insulating layers to keep wind, rain, and snow off them. It doesn't provide warmth itself — its job is to shield the warm, dry layers underneath from the weather.
What's the difference between a hardshell and a softshell?
A hardshell is fully waterproof and windproof for serious weather but less breathable; a softshell is breathable and stretchy, blocking wind and shedding light moisture but not fully waterproof. Hardshells suit storms; softshells suit active use in dry, variable conditions.
Do you need a shell?
If you'll face wind or precipitation — which is most of the time outdoors — yes, a shell is essential to protect your insulation from the elements. The type depends on conditions: a waterproof hardshell or rain jacket for wet weather, a softshell for dry, windy, active days.
Sources
- Layering basics — The Mountaineers