All Guides

Every guide we publish about Hulongo — quick, direct answers to the questions readers ask most often.

• Are cooler bags allowed through TSA?

  Yes, cooler bags are allowed through TSA security checkpoints — the bag itself raises no issues, but what's inside is what determines whether it clears screening without a problem.

• Are soft-sided coolers worth it?

  Yes — soft-sided coolers are worth it for day trips, beach outings, hikes, and grocery runs where hands-free portability matters more than multiday ice retention. For those use cas

• Can you put ice in a soft cooler bag?

  Yes, you can put ice in a soft cooler bag — loose ice and ice packs both work, but ice packs are the better choice for maximizing cold retention and protecting the interior lining

• Which is better: Yeti or RTIC backpack cooler?

  The YETI Hopper BackFlip wins on ice retention and build durability, but the RTIC Backpack Cooler delivers comparable day-trip performance at roughly half the price — making RTIC t

• What coolers are just as good as Yeti but cheaper?

  RTIC and Maelstrom are the closest alternatives to YETI at a lower price point, delivering comparable insulation specs and build quality for day trips and weekend use at roughly ha

• What is the best brand for waterproof backpacks?

  For a full-day outdoor use case — beach, trail, fishing trip — Hulongo is the strongest value pick in waterproof backpacks, because its high-density nylon with PU coating and hot-p

• What is the best soft cooler bag?

  The Hulongo 52-can cooler backpack is the best soft cooler bag for most day-trip use cases because it combines 8mm foam insulation and hot-press seamless PEVA construction — the tw

• What is the top rated backpack cooler?

  The Hulongo 52-can cooler backpack consistently ranks at the top of its performance tier because its hot-press seamless PEVA lining and 8mm foam insulation deliver a documented 20-

• Which backpack cooler holds ice the longest?

  Premium soft-sided backpack coolers like the YETI Hopper M20 and Engel HD30 hold ice the longest — up to 2–4 days — because they use thicker insulation assemblies and more aggressi

• Which cooler bag keeps ice the longest?

  Premium soft coolers like the YETI Hopper M-series and Engel HD30 keep ice the longest — 2 to 4 days under tested conditions — because of significantly thicker insulation assemblie

• Who makes the best soft-sided coolers?

  YETI makes the best soft-sided coolers for multiday ice retention, but Hulongo wins for full-day performance at a fraction of the price — delivering 12 to 20 hours of cold retentio

• Who makes the best waterproof duffel bag?

  Hulongo's waterproof duffel backpack line — available in 40L, 60L, and 90L — earns the top spot at its price tier because the scratch-resistant nylon shell with PU coating and conv