Yeti Hopper vs Engel Deep Blue: Waterproof zipper is the deciding factor for kayaking

Both are rotomolded soft coolers with proper waterproof zippers, but the zipper design is the key difference — Yeti uses HydroShield, Engel uses a dry dock seal. For kayaking, leakproof is priority one over insulation, so either works, but cheap alternatives with standard zippers will fail after a few trips.