The armor is classed as "Light" and is around the strength of Glass Armor. It has no enchants so you can add your own. The 4 pieces are:

*Cryomancer's Mask
**Armor: 15
**Weight: 3
**Value: 500
**Temper: Leather Strip and Steel Ingot

*Cryomancer's Armor
**Armor: 36
**Weight: 10
**Value: 1000
**Temper: Leather Strip and Leather

*Cryomancer's Gauntlets
**Armor: 12
**Weight: 5
**Value: 200
**Temper: Steel Ingot

*Cryomancer's Boots
**Armor: 10
**Weight: 5
**Value: 200
**Temper: Steel Ingot

The weapon is an ice sword called "Kori Blade". The slightly overpowered stats are:

*Kori Blade
**Damage: 15
**Weight: 10
**Value: 500
**Enchant: Cryomancer's Sting - Deals 40 points of frost damage to Health (Infinite charges)
**Temper: Ice Wraith Teeth

The two fun, but overpowered spells are:

*Kori Blade
**Description: Conjure a Kori Blade for 180 seconds.
**Cost: 250 Magicka
**Level: Expert Destruction

*Freeze Blast
**Description: Fires an ice spike for 20 damage, and freezes the target for 7 seconds. (Uses the Ice Form shout effect)
**Cost: 300 Magicka
**Level: Expert Destruction

The items and spell tomes can be found on Tundra, a lvl 25 cryomancer assassin being held in The Chill (Winterhold jail). Upon being sent there, or just traveling there, Tundra will be in the middle of attempting to break out. If you haven't already killed the Frost Atronach guarding The Chill in a previous visit, he'll engage it immediately. You can either slip out while the Frost Atronach is distracted, or kill them both. Either way, he is hostile on sight.