Kirkland Signature Diaper Sample - If you are expecting, know someone that is or have a little one in diapers, be sure to snag this free sample of Kirkland Signature brand Supreme Diapers. Choose from: Size 1-2 [Up to 15 lbs], Size 3 [16-28 lbs], Size 4 [22-37 lbs], Size 5 [27+ lbs], Size 6 [35+ lbs]. Limit one sample per household. Allow 3-5 weeks for delivery.