Pineapple Hydration Pack - Etsy。Paks & Rec Pineapple Water Backpack Wearable Hiking Hydration Pack - KID\'S SIZE “Great used condition.” This Paks & Rec hydration backpack is perfect for little hikers who want to stay hydrated on their adventures. The backpack features a fun pineapple design and comes in black. It\'s designed for hiking and other outdoor activities, making it a great addition to any young explorer\'s gear collection. With plenty of room for water and other essentials, this backpack is both practical and stylish. It\'s made from high-quality materials that are built to last, ensuring that it will withstand all of your child\'s adventures. Whether they\'re exploring the great outdoors or just playing in the backyard, this hydration backpack is sure to keep them hydrated and happy.