You'll need a versatile T-shirt on the trail.One that acts as an effective base or a cooling sports top as conditions demand. Part of the DofE Recommended Kit ListMoisture ControlStretchWash & WearLightweightMain: 92% polyester, 8% elastane / Trim: 91% polyester, 9% elastaneWeight: 152gModel is 5ft 11in, 80kg and is wearing Medium.Main: 92% polyester, 8% elastane / Trim: 91% polyester, 9% elastaneModel is 5ft 11in, 80kg and is wearing MediumColour: Blue