Packing efficiently for a 10-day trip to Costa Rica requires thoughtful selection of versatile and practical items. The use of a 40-liter Bagsmart backpack is highly recommended due to its smart compartments that prevent tangled messes, a separate laptop section, and a waterproof pocket perfect for liquids like toiletries. This backpack’s multiple grab handles and trolley compatibility make airport navigation easier. Include lightweight and multi-use clothing such as merino wool shirt and shorts sets, microfiber towels, and quick-dry swimwear. Merino wool is excellent for travel because it regulates temperature and resists odor. Having at least two bathing suits is prudent given Costa Rica’s diverse beaches and water activities. Footwear should balance comfort and utility: sandals suitable for beach and casual walks, as well as sturdy shoes for hiking the rainforest trails. Don’t forget essential accessories including sunglasses, rechargeable batteries, hard drives for backing up photos, and multiple cables to keep devices powered. Toiletries should be organized in the backpack’s waterproof compartments, along with passport, wallet, lip balm, and AirPods for convenience. The compact size and smart organization options of the Bagsmart backpack enable travelers to avoid the hassle of lost luggage, as experienced by many who resort to carry-on only packing. Adopting a carry-on only approach with a 40-liter backpack not only prevents lost luggage incidents but also encourages intentional packing focused on essentials and multi-functional items. This approach streamlines the travel experience in Costa Rica’s active, tropical environment and ensures you’re prepared for the varied activities and climates encountered.