My Lap Box adjusts from 10.5 inches to 13 inches.
My Lap Box has arms / drawers that are extendable and can be adjusted in and out to fill in the void that is next to the child's waist.
My Lap Box has a lid that is removable and can be easily attached / stowed to the underside while in use. My Lap Box can still be adjusted from 10.5 inches to 13 inches and the arms can still be extended while the lid is attached to the bottom.
My Lap Box is Consumer Product Safety Commission (CPSC) certified for ages 18 months and older.