Check the listing for details. ABC Advanced Base Camp-Climbing/Rappelling Guide Harness Black USA. Condition: Used. Listed at 24.95 USD. The ABC Advanced Base Camp Climbing/Rappelling Harness in Black is a high-quality giude harness designed for outdoor sports enthusiasts. With a focus on safety and durability, this harness is built to support climbers and rappellers in challenging environments. Made by the trusted brand Advanced Base Camp, this harness ensures a secure fit and reliable performance while engaging in climbing and rappelling activities. Ideal for adventure seekers looking to enhance their outdoor experience.