I was having knee trouble from sewing so much (arthritis), so I ordered the kneezeaze from Nancy's Notions on line. I am not sure of the spelling of the plastic box like holder that lifts the petal at an angle slightly so my knees are great for much longer periods of sewing. I placed a non skid rug mat under it. You know those rubber mats you cut to size for a room rug? I have had no traveling problem, and I love the Neezease.