It varies from 0.112" to 0.115"

Yes, vinyl straps must be placed in hot water just under boiling point, for at least 5 minutes. Straps must be hot before you stretch and attach them to the frame.

Outdoor furniture should be cleaned periodically with a multipurpose cleaner; we recommend Casual Clean Multipurpose Cleaner. Routine cleaning will help enhance the appearance and extend the life of your patio furniture. This cleaner attacks the sun-baked dirt and mildew stains. Dilute with water for less difficult cleaning jobs.
Hose down. Dilute 1 part of Casual Clean Multipurpose Cleaner to 5 parts of water. Scrub using a nylon brush, sponge or a cloth. Rinse thoroughly and leave in the sun to dry. To prolong the life and beauty of your fabric, we recommend that a towel be placed over the sling when using any tanning or insect repellent products. Should any of these products come in contact with the fabric, wash and rinse immediately as noted above.
Do not use bleach, solvent-based cleaners, or water temperature of 100 degrees. Do not put sling in the swimming pool.

Vinyl strap by the roll orders usually within 5 business days excluding shipping time. Pre-cut vinyl strap orders are usually within 7 business days excluding shipping time. The shipping time will be based on the carrier and shipping method selected at checkout. 

There is no way to exactly tell how long vinyl straps will last. If your furniture remains outdoors, your vinyl straps will last an average of 5 to 10 years depending on where you live and how you maintain the straps.
Be aware that the sun will in the long run fade the vinyl strap color.

It is made in the USA with a 100% virgin vinyl as well as ultra violet inhibitors manufactured into the strap. Its quality makes it a perfect fit for outdoor use.