Portmeirion Dinnerware, Botanic Garden Mug and Coaster Set A fresh gift idea. Add to a friend's collection or expand your own with Botanic Garden dinnerware and accessories featuring the beloved triple-leaf border and lifelike floral motifs of Portmeirion. Two fine porcelain mugs that are dishwasher and microwave safe Two cork-back coasters-that are easy to clean, stain, heat and scuff resistant. Coasters measure 4" square Mugs hold 10 oz.