Check the listing for details. J. Crew Navy Lightweight Backpack Packable for Travel Hiking. Color: Blue, Condition: Pre-owned. Listed at 16.31 USD. The J. Crew Navy Lightweight Backpack is a versatile and practical choice for travel and hiking during the summer season. Made of durable nylon material, this backpack features a zip closure and a lightweight design for easy carrying. The navy blue color adds a stylish touch to your outdoor adventures, while the nylon handle/strap material provides comfort and reliability. Perfect for both men and women, this packable backpack from J. Crew is a must-have for those looking for a convenient and reliable option for their outdoor excursions.