Bought the Kind in light gray--very pretty silver looking!  We put our adjustable king bed and frame that consists of 2 Twin XL mattresses inside this frame and they fit perfect.   Since there is space between the headboard and the mattress, which others are commenting as a con, allows the head of an adjustable bed to elevate...to a pro for us!!
Even thought we did not use the bed frame that came with the bed, it is of good quality, and plan to use it with another mattress set I bought for a guest room.