Traditional
Classic
Classic Plus
Standard

15" x 21" x 3.5" 15" x 23" x 3.5" 15" x 26" x 4.5" 20" x 26" x 4.5"
4 lbs + 1 lb extra 5 lbs + 1 lb extra 6 lbs + 1 lb extra 8 lbs + 2 lb extra
Perfect for smaller adults, children, or while traveling Perfect for anyone, especially smaller adults Good for side sleepers that need additional head and neck support Good for taller people, and side sleepers with broad shoulders