Yes all Chase Harper USA bags with company logo are covered by a Lifetime Warranty. If you see a tag with a statement such as, "manufactured by Chase Harper USA" but you don't find brand logo, you would then have to refer back to the company where you originally purchased the bag.
The best way to clean your bag is to blow it out with air, hand wash with mild soap & warm water, then let air dry. To wash in a washing machine first remove all removable hardware & inserts (make sure to remember how they go back together). After removing all excessive dirt & grime place the bag in the washer and set on light to normal cycle. Use cold to warm water and mild detergent but NO BLEACH! Hang Dry. Do Not Dry Clean or put in Dryer.
This is a problem with all items in the sun. For this matter you can speak to the expert himself, Ron Harper.