Our rigorous scientific testing makes it easy to find the right outerwear for any conditions. Guaranteed.Play
Safety Testing: Kids' Products (01:33)
Camp Bags (00:52)
Kids' Grow Cuffs (01:37)
L.L.Bean Classic Backpacks (00:59)
L.L.Bean Book Packs (00:50)
L.L.Bean Deluxe Book Pack (01:06)
L.L.Bean Original Book Pack (00:45)
L.L.Bean Original Junior Backpack (00:46)
L.L.Bean Super Deluxe Book Pack (00:51)
School Backpacks (00:56)
Original Plus Book Pack (00:56)
Top Ten Bike Helmet Tips (02:39)
Snowfield Jackets and Parkas (01:18)
Pull Sleds and Toboggans (01:26)
Hi. I'm Brent Vanni, outerwear product developer for L.L.Bean. I'm here today to talk to you about our Comfort Ranges, the warmth-rating system we designed to help you choose the right outerwear for your needs.
The first number of our Comfort Ranges is based a computer model simulating a person engaged in light activity, such as walking. The second number is based on a model simulating a person engaged in moderate activity, like running or skiing. Because an active person generates more body heat, the same piece of outerwear will be comfortable at a lower temperature.
To generate the data for these computer models, we scientifically test all of our insulated outerwear at Kansas State University's Institute for Environmental Research, using a high-tech thermal mannequin.
Hi. I'm Elizabeth McCullough, co-director of the Institute for Environmental Research. Here we determine the temperature ratings for outdoor apparel. First, the mannequin is dressed in the L.L.Bean base ensemble. This consists of thermal underwear, a fleece shirt and jeans, a knit ski cap, mittens and boots. Then we add the jacket to be tested.
Brent: The mannequin's surface is heated to a constant temperature, which simulates the average skin temperature of a human being, then the mannequin's computer system measures how much heat is lost from the body to the environment. Not only do we test these products in the lab, but we test them in the field as well in some of the harshest conditions we can find. These field tests ensure that the lab tests correlate to real-world experience.
We conduct all this testing so you'll have the guidance to buy the right outerwear for any conditions. Guaranteed.