All of the safety harnesses are easy to put on and come with all the necessary buckles and straps. Take a look at the Sala standard vest style body harness. This safety harness has a no tangle design so you won't spend too much time getting into it or worrying about putting it on wrong.
Sala Standard Vest-Style Full Body Harness
Sala 1102000 Standard Vest-Style Full Body Harness. Delta No-Tangle design for added comfort and easy donning. Back D-ring....
Miller DuraFlex Python Safety Harness
Miller Fall Protection P950-4/UGNU DuraFlex Python Safety Harness. Back D-ring. Friction buckle shoulder straps. Tongue...