SpareParts Jock Harness
This harness gets rave reviews for comfort and durability. To quote one tester: "I felt like I could wear this all day, it became a part of my body". Flexible and sturdy enough for the most enthusiastic strap-on play, this harness is entirely waterproof, machine-washable, and will accommodate dildos up to just under 2" wide.
Available in Black.