I only started using this around 4.5 months after the baby's neck was stable, so I've only used it for about 2 months! There aren't any noticeable stains, and even I, at 152cm and 40kg, could easily put it on with a 7kg baby! Now that my baby is 7 months old and over 9kg, I've bought a new one, so I'm selling this one! Baby Carrier Mini in breathable 3D mesh material, gray beige. - Brand: BabyBjörn - Model Name: Baby Carrier Mini - Color: Gray Beige - Material: 3D Mesh (Air) - Accessories: Instruction manual - Features: Breathable design Thank you for looking.