Upon purchase, you'll receive TWITCH account.
Link it to your game account to claim the following items: 

Path of Exile 2 - Energising Bolt Flask | Halo Of The Righteous | Temporal Lords Portal | Azmeri Noble Deer Pet | Hunters Trophy | Honour Guard Rhoa | Sun Priest's Incineration | Clam Stash | Helmet of the Abyssal | Cloak of the Abyssal | Verdant Wilds Dodge Roll | Blood Moon Wolf Pack | Mask of the Vaal | Atziri's Royal Cache | Mirage Weapon Effect | Mirage Quicksilver Flask | The Red Queen's Font | Arbiter Waypoint | Wendigo's Crown

Path of Exile - Havenwood Cloak | Syndicate's Demise | Rose Charges | Hiveborn Crawler Pet | Treasurer Hideout Decor | Breach Character Effect | Xesht Finisher Effect | Mirage Weapon Effect | Mirage Quicksilver Flask | The Red Queen's Font

NOTE: 
!!! Claim items promptly post-purchase; they may expire.
!!! Unlink the Twitch account once all items are collected.
!!! Items hidden after 6 months are still claimable.

These items can only be obtained once per account. You will only receive items that you have not received before. To receive items, you must unlink the old twitch from your game account.