The exped fold drybags 4 pack comes in a pack of four different sizes 3l 5l 8l and 13l meaning there39s a pack for everyone or one to accompany you on whatever the activity you39re taking part in this exped dry bag is super reliable and 100 waterproof ensuring all of your belongings are kept safe and dry throughout your journey each storage bag is lightweight and features a secure roll top closure with a quick release buckle for additional closure constructed using a durable and pli