Medipak UVLI Bag™ 6" x 10" Amber, Slit Top Style, for 1/2L IV Bags Light protection is extremely important in health care, and UVLI-Bags™ are designed to provide protection against the deteriorating effects of ultraviolet light. UVLI-bags are routinely tested for effectiveness as part of the Medipak Quality Assurance and Control Program. UVLI-bags are cost effective - no more than pennies need be spent to protect IVs that often cost $50 and up to administer.