Setup: The cot requires assembly. It's recommended to follow the included manufacturer's instructions carefully, ensuring all fittings are securely tightened before use. Having a second person may be helpful for easier assembly. Compatibility: This cot is designed specifically for a mattress measuring 100 x 50cm. Using a mattress of a different size could create unsafe gaps or an ill-fitting surface. The cot is suitable for babies from birth up to approximately 18 months. Care: To clean, wipe down all surfaces with a damp cloth and mild soap. Avoid harsh abrasives or chemical cleaners. Regularly check all screws and fastenings to ensure they remain tight and secure for your child's safety. Dust regularly to maintain cleanliness.