Not sure which size ottoman bed is right for your child? Our size guide covers all standard sizes with room measurement tips to help you choose with confidence.Read the full guide → Size Dimensions Best For Min. Room Width 2ft6 Small Single 75 x 190 cm Ages 4–10, smaller rooms 6ft 3ft Single 90 x 190 cm Ages 6–14, most popular 7ft Small Double 120 x 190 cm Ages 10+, transitional 9ft Double 135 x 190 cm Ages 12+, long-term 10ft Our most popular sizes are the 2ft6 and 3ft — both offer generous storage and grow beautifully with your child.Shop our children's ottoman beds →