Foam insulation for water hose

[Burnhaven]

I believe the white water supply hoses are usually 1/2 inch diameter, but if you are doing additional work on the hose like adding electrical heat tape you might need a larger diameter foam insulation.

Pratt Retail Specialties 3/4 in. x 6 ft. Rubber Self-Seal Pipe Insulation-420390 at The Home Depot

HOW TO: RV in the Winter - YouTube

[Texmac]

I have a heated hose from Pirit. I have not had a chance to use it in cold weather, but the reviews I read prior to purchase were good.

Amazon.com: pirit heated water hose