A perfect sleep space for years to come… We set the bar in breathability with our patented mesh crib liners. Then tackled the crib itself. The Breathable Mesh Toddler Bed Conversion Kit transforms our 3-in-1 Breathable Mesh Convertible Crib into a cool ventilated toddler bed. Just add the guardrail. No tools required. Simple. Smart. Safe sleep. Only from BreathableBaby of course.