Gtechniq - I1 Smart Fabric - Protects Fabrics from Water Based Stains; Ultra Durable Water Repellency; Prevent Soaking, Swelling, or Rotting on Any Fabric; Colour Safe & Waterproof (250 milliliters)

Wow this stuff really works…not like chemical guys fabric gaurd or what ever they call it…this stuff is the bomb..works in cars n shoes…I love it…buy it and u will never switch to another brand…

That the protection level is fantastic and is long lasting…

I did one application that has last months without any degradation to its hydrophobic properties. If done properly, a single application will use almost an entire bottle, but it is well worth it. In my humble opinion, this is THE product to use on a convertible top. Car: 2018 Audi A5 convertible with black cloth roof.

This is a great product but once you open the seal and attach the spray head use it soon.After a three weeks almost half the bottle had evaporated. I’ve used this before but always opened a fresh bottle and applied.Just something you need to know.The odor is very strong, open all doors and windows and expect to leave it for hours or overnight.

Works great from a waterproofing standpoint. It's a bit pricey compared to its competitors, especially since 500mL isn't enough to do a full convertible top for a 2+2 convertible, might be enough for a roadster. I'd probably just go to gtechniq's website and get the 1LOverspray can be difficult to remove. Tape off what you can with plastic.Does cause some discoloration, makes a black convertible top dark gray. Not noticeable if you applied it evenly, but definitely can tell if you ended up a bit thin in some areas (which ended up happening with the 500mL bottle.Lasts about 6 months on a car parked outside.

Bought this because it was recommended by professional detailer. Got great results.

Works great, extremely hydrophobic! Coated all my exterior cushions !

Easy to apply