These glow in the dark step mats are perfect for caravans or motorhomes can also be used outside on garden steps as they are fully waterproof this single glow mat comes with strong adhesive strips to secure it into place made from durable pvc this mat will absorb light during the day sunlight is best and then glow for 8 12 hours at nightr single glow mat approx 40cm x 18cm ideal for outdoorindoor steps perfect for caravan or motorhome steps mat glow in the dark for approx 8 12 hours af