A strap that can be easily attached to a smartphone and used colorfully, fun and conveniently. The length can be adjusted according to your preference and scene, and it is a strap with excellent fashion and functionality that can be used in 3 ways of shoulder, neck, and hand. In addition to the pop and casual charm of the strap itself, the handmade cord-ended Celtic button knots and chrome-coated metal parts make it an elegant item. The slender strap, which is fashionable and functional, uses an attachment with a load capacity of 15 kg and a rope that can withstand up to about 200 kg. The high level of safety is also attractive. In order not to interfere with the movement of the body when wearing, we are particular about materials that are highly flexible and feel good on the skin. Not only does it free your hands when doing housework or commuting, but it also helps prevent your smartphone from being lost or dropped. The length can be easily adjusted with a single action. If you put the strap at an angle, it will not interfere with movement. If you use the included special holder, you can also attach it to a commercially available smartphone case (*). (* It can only be used in a smartphone case with a charging hole.) The top and bottom widths must be +1mm in connector thickness. It cannot be used in cases made of inflexible materials or cases with special designs.)