The Frost Sac is a monster part youll need to collect to forge several pieces of armor or weapons in Monster Hunter Wilds. But its an elusive part (as is the similar Freezer Sac).In this Monster Hunter Wilds guide, well go over how to get a Frost Sac and Freezer Sac namely, which monsters you need to hunt.How to get Frost Sac and Freezer Sac in Monster Hunter WildsThe Frost Sac is a part from the Hirabami, a flying snake monster found in the ice caves in the second chapter of the main story.It has a 23% chance of dropping the part, so if you dont collect a Frost Sac during the Hirabami story quest, your second hunt should net you one.The Frost Sac is only available from the low-ranked version of the Hirabami; the High Rank Hirabami drops the Freezer Sac. (The Jin Dahaad also drops a Freezer Sac.)Frost Sacs can be used to forge Hirabami armor namely the headpiece along with the Windclaw Blade 1 long sword and the Windpierce Lance 1. The Freezer Sac can be used forge the Hirabami Mail Alpha, and the Windclaw Blade 2. Our Monster Hunter Wilds guides can outline your progress with our main story walkthrough and monster list ahead of reaching High Rank, help you settle on an armament with our weapons list and best weapons explainers, uncover ores, bones, and monster tails, and teach you how to join friends in co-op multiplayer.