X-FIRE® Single Radio Chest Rig Harness w/Tool Pockets and 3m Reflective

The ad said adjustable shoulder straps. they are not. or at least i can not figure out how to move them. can someone please let me know how?

Can I hang my Speaker Mic on this harness?

Can the pouch fit an escape respirator? I work in a plant and having one is essential.

is there an extension belt for 4x guys? just need like a 3-4 foot clip belt extension. can one be made or do you carry any in stock?