Children's pajamas are made of 100% organically grown cotton, which is grown without the use of synthetic pesticides and fertilizers. The soft organic cotton knit provides a comfortable fit, while the short sleeves and crewneck neckline give a classic look. On the front there is a graphic that adds a playful detail. The elastic waistband allows for easy dressing and adjustment. For the safety of the child, the pajamas should be tight-fitting. This product is not non-flammable, loose clothing may be more prone to catching fire. It has a snug fit - a tight fit for maximum comfort and safety during sleep.