What is the difference in functionality between the Gigawatt Dayhike Jacket and the Carson Softshell Jacket?

The two outer garments from SIERRA DESIGNS differ in the direction of what they block. In addition to water repellency that bounces off water droplets touching the surface, the Gigawatt Dayhike Jacket features a waterproof function that prevents moisture from penetrating inside the clothing^[1]. It serves to block outside moisture and maintain body temperature when walking along wet forest trails or during rainy and windy weather. It is suitable to pack in preparation for bad weather.

On the other hand, the Carson Softshell Jacket incorporates a water-repellent function that lightly sheds moisture, alongside breathability that allows air to circulate and moisture permeability that expels sweat to the outside^[2]. While waterproofing is a wall that blocks water driving in from the outside, breathability and moisture permeability pave the way for heat and water vapor rising from the body to escape. This helps maintain comfort without the inside of the jacket becoming damp, even during high-sweat activities such as uphill hiking.