After reading the reviews, I purchased a SlideBelt in black leather and was very impressed as to the high quality and ease of use.  The small easy adjustments were what I was seeking for my back condition (spine issues).  I have been using military style web belts to achieve this easy; but this is a style I didn't want to wear for all occasions.  The belt buckle is a solid metal one; so it is a bit heavier than other buckles.  Rating 5 stars

So I purchased two additional belts - one with dark brown leather and another black leather belt but with a dressier black buckle.  The new black performed flawlessly like the first belt.  Unfortunately, the brown belt hung up slightly while unbuckling, which was very annoying.  I tried to determine if there was an easy adjustment to be made but I could not find one.  So I reluctantly contacted the seller and stated the problem.  The belt was replaced fast with one that performs like the black leather belts.  Great customer service!  Another 5 stars - this time for customer service.