How do I loosen the Fllo harness? Clek January 14, 2021 21:21 Updated Follow While lifting up on harness adjuster tab, pull out on the shoulder harness straps. Related articles Video Manual (US) - Installing Fllo Rear-Facing Download Owner's Manuals for Fllo Video Manual - Oobr How do I check that my child is properly harnessed in the Fllo when forward facing? How do I properly adjust and position my Fllo's Crotch Strap? Comments 0 comments Article is closed for comments.