How do I loosen the Fllo harness? Clek September 09, 2021 23:32 Updated Follow While lifting up on harness adjuster tab, pull out on the shoulder harness straps. Related articles How do I adjust the Fllo's Shoulder Harness Straps? How do I loosen the Foonf harness? Video Manual (US) - Installing Fllo Rear-Facing How do I check that my child is properly harnessed in the Fllo when forward facing? Video Manual (US) - Installing Fllo Forward-Facing Comments 0 comments Article is closed for comments.