Inventory consists of the following:

 

The Company maintained reserves for obsolete inventory of $1.0 million and $0.8 million as of December 31, 2021 and 2020, respectively. As of December 31, 2021, obsolete inventory impairment related to finished goods is $0.8 million and $0.2 million is related to raw materials. As of December 31, 2020, all obsolete inventory impairment related to raw materials. The impairment of obsolete inventories is recorded within cost of revenue in the consolidated statements of operations and comprehensive income (loss).