Red Rock Outdoor Gear 5-Gallon Solar Shower Black. With this Solar Shower from Red Rock Outdoor Gear just fill up the bladder with cold water place it on a flat surface with the black side facing toward the sun and in about three hours hop in for a steamy shower. Specifications for Red Rock Outdoor Gear 5-Gallon Solar Shower: Manufacturer: Red Rock Outdoor Gear Size: One Size Color: Black Fabric/Material: PVC Weight: 12.8 oz Features of Red Rock Outdoor Gear 5-Gallon Solar Shower 5-gallon capacity Durable PVC construction Solar shower can reach temperatures up to 120?F Package Contents: Red Rock Outdoor Gear 5-Gallon Solar Shower Red Rock Outdoor Gear 06-009: 5-Gallon Solar Shower Black