I got the shoe clip on amazon that a speaker tumbler uxcell Shoelace Locks Buckle Aluminum Elastic No Tie Shoe Lace Turnbuckle, Glossy... Tieless and Anti-loose Design] - No tie shoe lace locks designed for anti-loose shoelace motion. Once you lock, no need to worry the shoelace will loose even... 8mm Diameter Shoelace Turnbuckle Uxcell Shoe Laces Buckle Lock Aluminum No Tie Shoelace Turnbuckle No Tie Shoe Lace Buckle [Application] - Shoelace buckles commonly used on boots, sports shoes, canvas shoes, work shoes or any other shoes need to tighten the shoelace. Once you lock, no need to worry the shoelace will loose even though you walk or do an exercise for a long time. Meets various needs for different shoes and you can share them with your family and friends. Tieless and Anti-loose Design - No tie shoe lace locks designed for anti-loose shoelace motion. [Tieless and Anti-loose Design] - No tie shoe lace locks designed for anti-loose shoelace motion. No-Tie Shoelace Turnbuckle - Ireland Shoelaces Shop – Shoelace Shop [Size] - About 8mm in outer diameter, 18mm in total length, 3., 4mm in hole diameter. [Material] - These shoelace locks are made of aluminum alloy, which is lightweight, sturdy and has long-lasting durability.