In Jonathan Safran Foer's novel "Extremely Loud and Incredibly Close," a child imagines a revolutionary mattress design that accommodates the human body better. The idea revolves around creating spaces for arms within the mattress to enhance comfort while sleeping on one's side. This design could potentially improve spinal alignment, which is crucial for health, and also facilitate more enjoyable moments of intimacy and connection during snuggling.

The child's thoughtful contemplation reflects a blend of practicality and the desire for closer human interaction. By suggesting this innovative idea, the narrative emphasizes the importance of comfort in both physical and emotional realms, showcasing how something as simple as a mattress can impact our well-being and relationships.