Coroplast 
Cubes 
Hay Review Detail
Nice variety
Overall rating
4.7
Service
5.0
Pricing
4.0
Selection
5.0
They had a nice rainbow of colors to choose from (white, red, orange, yellow, green, blue, indigo, purple...), along with some samples on the wall to give you an idea of each. Service was friendly. Pricing wasn't too bad either. A full white sheet cost about $20.