Derivan Refillables (Empty Plastic Pan & Tin Box for Watercolour)Derivan Empty Watercolour Pans are an ideal way to carry your colour palette when on the go traveling or exploring. Simply fill the pans from your favorite watercolour tube shades, let them dry, and then rewet them when you're ready to paint. Full and half pans have a universal size that will fit any travelling metal watercolour box. Full Pan Size L x W x D : 3 x 1. 8 x 0. 9cm Half Pan Size L x W x D : 1. 5 x 1. 8 x 0. 9cm Tin Box : Can hold 2 x full