Enea Design Ema sledge chair with open backrest is strong and lightweight and allow the chairs to stack up to 45 high. This is ideal for all kind of spaces, special for meetings and conferences. Ema has a modern feel to its look as this is contemporary and the design will work well for any modern or classic environments. Choosing Refurbished: We love bringing these back to life with it being fully steam cleaned. Parts remain: The chair will remain with its original material and framework. The frame may show signs of minor scuffs and wear. This will not affect the functionality of the chair.