We purchased a 200 pound 4 wheeled walker for my sister who has MS. She can walk short distances with it and will often use the seat to rest. After 8 weeks, the back rest broke and she fell to the floor, banging her head on the kitchen cabinet. (she had a large bump on her head but luckily did not lose consciousness) When her friend took the walker back to the Lincoln store the next day for an exchange, she was asked how much my sister weighs!!! Not that it should matter, she is of average weight. They refused to provide an exchange, or even a loaner walker until their engineer had looked at it. They didn't seem to care how she would manage without her walker. A week later, she was contacted by the engineer whose assessment was the problem was caused by "User Error"!!! Really!! What exactly is a person who can barely walk supposed to have done to it? He said he would "price up" having it fixed! My sister refused to pay and they did finally fix it free of charge. However, they should have given her a replacement walker right away and compensated her for her injuries. Not to mention not accuse her of causing the problem! We will never use this company again and would not recommend them to anyone. They are selling dangerous products and have extremely poor customer service.