Ergo Back Packdesigned As A Day Pack The Backpack Easily Snaps Around The Straps Ofthe Carrier For An All-In-One Baby Carrier And Day Pack. Carry Yourbaby And Necessities For A Day Away From Home Great For Active Parentswho Love To Hike. Access Into The Sack Is From The Top With A Solidbottom To Help Keep Its Shape. This Accessory Is Roomy And Will Hold Atoweldiapers Swim Clothes Change Of Clothes Snacks Sun Screenhats And More.Featuressnaps Around Straps Of Baby Carrier With Four Relatch Buttonsdimensions 14" 36Cm High By 14" 36Cm Wide By 4" 10Cm Deep.12 Ounce 100 Cotton Canvastop Zipper Has A 10" 26Cm Wide Openingattached Bottle Holdertwo Front Pocketsside Zipper Pocket For Easy Access When Being Wornshoulder Straps For Independent Use Of Baby Carriertop Handle For Easy Totingmachine Washable Gentle Cycle