Denver Nuggets Spectra 30 x 60 Beach Towel. IN STOCK. Spectra Beach towels are plush 30" x 60" and decorated in the US with full color dyed sublimation for a soft to the touch feel. The towel has a soft polyester top surface and an absorbent cotton back surface. You'll find this towel will be the best-looking towel on the beach or at the pool.