
The Hip Pouches in Resident Evil 3 Remake are extremely important items because each one adds two inventory slots. Collecting them allows you to carry more items, providing an obvious tactical advantage. Bear in mind that Carlos's two Hip Pouches cannot be collected by Jill, as they are exclusive to him.
This Hip Pouch is obtained by completing the jewel puzzle.

This Hip Pouch is difficult to miss. It is inside the safe room immediately after going up the stairs, beside the item box.

Collect the Battery Pack from the Laboratory and climb the ladder beside the slope you previously slid down. Insert the Battery Pack into the locked door, go around the walkway to unlock the gate, and then retrieve the Battery Pack. Place it beside the Security Room door to gain access.
It is inside the small office within the West Office, in the same safe used in Resident Evil 2 Remake. Even the combination is the same: 9 left, 15 right, 7 left.
You must wait until after administering the vaccine to Jill. During the zombie siege, a Hunter will break through the door behind the counter. When you enter the room to activate the breaker, you will find the Hip Pouch on a shelf.
It is located inside the safe room at the very beginning of the area, beside the typewriter.
This Hip Pouch is only available in Nightmare Mode. It is inside the first subway safe room, beside the two Green Herbs, immediately after going up the subway stairs following your first meeting with Mikhail.
These two Hip Pouches are only available after purchasing them from the Shop and will not appear in Assisted Mode. Either one or two will appear, depending on how many you purchased, beside the item box inside the subway safe room. During Carlos's section, they will appear on the Police Station's front desk.