CONSULTANT shall be reimbursed for any reasonable expenses incurred while performing Services on behalf of SUNESIS, including travel ( i.e . airfare, meals and lodging), provided such expenses are approved by SUNESIS in advance.  All air travel on behalf of SUNESIS shall be coach class unless otherwise mutually agreed by the parties.  As a condition to receipt of reimbursement, CONSULTANT shall be required to submit to SUNESIS reasonable evidence that the amount involved was expended and related to Services provided under this Consulting Agreement .