Glasses included with purchase and dishwasher safe. Please note the variations within wood can be strikingly unique. The natural variations of wood range from color, texture, grain, knots and more. No boards will be the same and the images shown are models and may not reflect the actual product purchased. Flight board is approximately 18 inches (45.72cm) in length and 6 inches (15.24cm) wide. The chalk tape can be cleared with soap and water.