What is the sleep trial and how do returns work?

This World Class pillow top includes a 365-night sleep trial, among the longest offered. A full year lets you sleep on the medium feel through every season before deciding, which is ideal for judging a deep pillow-top that takes weeks to settle into. If it is not right, return it for a refund or exchange. Keep it clean and use a protector, since a stained mattress cannot be returned.

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