The HOLDIE mouth-nose protection maskstraps are also available for children. 7 cm shorter than the Classic HOLDIEs and with an innovative magnetic closure in the neck that opens easily on a pull. HOLDIEs now offer double the protection for our little ones. The braided KIDs HOLDIE has a diameter of 4mm and measures, including carabiner, a length of 35.5 cm, which makes it more comfortable for children to wear. HOLDIE - holds what protects you.