Gunner Kennels G1 Small (with Gunner Kennels strengthrated 8´ tiedown straps) earned a 5 Star Crash Test Rating from Center for Pet Safety in the Pet Carrier category. The Small is the first, and only, product to be award a dual certification in both the crate and carrier categories. Test dog size: 30 lb. To learn more about the certification program, go to www.gunnerkennels.com/crashtested.