Yeah, but I keep some air in mine so it floats in the event it or I go overboard. Here is the link to the one I bought. I hope it helps!

MARCHWAY Floating Waterproof Dry Bag Backpack 5L/10L/20L/30L/40L, Roll Top Sack Pack Keeps Gear Dry for Kayaking, Rafting, Boating, Swimming, Camping, Hiking, Beach, Fishing (Grey, 30L) https://www.amazon.com/dp/B0711WRP5Z/ref=cm_sw_r_cp_apa_i_ETVsDbDRMS09A