The ease with which the trundle bed can be pulled out and put back is crucial. Look for beds with smooth, gliding casters or wheels that make pulling the trundle out effortless.
A high-quality trundle bed should have a durable frame made of sturdy materials like solid wood or metal. The main bed and the trundle both need to be strong enough to support regular use.
Trundle beds come in various sizes, including twin and full. If you're using it for guests or children, a twin-sized trundle bed might be sufficient, but for older teens or adults, a full-size trundle might be more comfortable.
Make sure the trundle bed provides proper mattress support. Slats, a solid platform, or a metal grid base are common support systems that allow for ventilation and mattress durability.
Always check the weight capacity for both the main bed and the trundle. Ensure it can support the sleepers it's intended for, especially if adults will use the trundle bed regularly.