The wiper does what it should and was misbehaving in any way, so there is smooth 5 Stars. He wipes good, the magnets are strong and the wiper thus holds bombproof without slipping on the whiteboard. The felt can be easily replaced (Velcro fastening), replacement covers, there are also reorder.
The only sticking point: For our 60 x 90 whiteboard wiper is almost a little too big. The smaller wiper Dahle would probably be ideal for our purposes.