Tent

Restores a lot of HP to party. Also saves game. Used outdoors.
Price 250 gil (160 gil on Easy)
Value 125 gil (80 gil on Easy)
Sold In Crescent Lake, Gaia, Pravoca, Elfheim, Onlak
Restores 60 HP to all party members, and allows the player to save the game. Can only be used outdoors.

Tents have double the effect of Sleeping Bags, but cost more than triple the gil. You'll still use a lot of Tents, simply because they're more widely available. As with Sleeping Bags, the main benefit is the ability to save on the World Map. But also like Sleeping Bags, Tents don't restore any MP.
Compare Tent to other Items
Shops: Where Tent is sold – 5 shown
Map Shop
Pravoca Items
Elfheim Items
Crescent Lake Items
Gaia Items
Onlak Items
Treasures: Containing Tent – 7 shown
Map
The specifics of where this treasure can be found
Notes
Tower of Mirage 1F Found in a chest in the central room
Dragon's Cave Found in a chest in the northern room of the western cave
Temple of Chaos Found in a chest in the northwestern treasure room
Mt. Gulg B2 Found in a chest in the southwest treasure area in the large room
Mt. Duergar Found in a chest in the treasure room
Terra Cavern B2 Found in the central chest in the eastern room
Terra Cavern B4 Found in the southwestern chest in the southern room (guarded)
Sleeping Bag Cottage

Related

CABIN

Price 250 G
Sold In Crescent Lake, Gaia, Pravoka, ElfLand, Onrac
Restores 60 HP to all party members, and allows the player to save the game. Can only be used outdoors.

CABINS have double the effect of TENTS, but at more than triple the cost. You'll still use a lot of CABINS, simply because they're more widely available. As with TENTS, the main benefit is the ability to save on the overworld map. But also like TENTS, CABINS don't restore any MP.

Tent

Game Name Tent
Price 100 gil
Value 50 gil
Effect Recover 1000 HP, 100 MP, and status other than KO to party

Tent

Recovers party's HP/MP to 100%
Price 1,200 GP
Value 600 GP
Statuses Dark, Zombie, Poison, Imp, Petrify, Wound, Clear
World of Balance Shops Aged Man's House, Albrook, Blackjack, Figaro Castle (v2), Jidoor, Kohlingen, Mobliz, Narshe (v2), Nikeah, Returners' Hideout, South Figaro, Thamasa, Tzen
World of Ruin Shops Figaro Castle, Jidoor, Kohlingen, Nikeah, South Figaro, Thamasa
A Tent is like a Sleeping Bag that works on the entire party for just under 2½ times the price. You can only use a Tent on the World Map or at a save point, and it will fully restore the HP and MP of the party.

Tent

Type Tent
Description Fully restores abnormal status and HP to all
Value 250 gil (375 gil with the Sell-High menu ability)
Used in Battle No
Menu Effect All party members