Werner has three basic types of fastening systems on there Full Body Harnesses. Parachute, Quick connect, and Tongue Buckle. Everything they manufacture has 5 point adjustment.  We would not recommend 3 point adjustment on a harness due to circulation issues if a fall does occur.

The parachute  or pass-through style is the least expensive and comes on the harnesses that are generally less than $50.

You will find it in the roofers kits, and any price point product.  Again, beware of three point adjustment.

This is the worst type of fastening system. It constantly is loosening up, and creates a situation where the worker is not “fitted” properly and can be fined by OSHA.

The Quick connect is the most expensive version available, this was created to make it quick to disconnect with your gloves on.

There are certain scenarios that this may be necessary.

Generally though, this buckle is harder to adjust for comfort and is similar to the parachute buckle in the loosening up part.

The Tongue Buckle, is the middle of the road in price.  But it is far and away the best type of fastening system. There are two reasons: first is that it is a fixed in place, it will not loosen up on you. The second is that it is very easy to adjust.

Here are some harnesses made by Werner Ladder.