Leather Self-Finishing Air Tag Key Fob by Planet Earth Leather. 

• Size: 2" x 4.5" (leather section)
• Made of high quality leather with a pebbled finish, and full leather both sides
• One side fits the air tag, other side fits a 1.25" round canvas insert
• Includes both a split key ring, and oval hook lobster clasp, silver finish

Self Finishing instructions by Planet Earth - 

• Measure canvas to make sure it fits into the opening, prior to finishing
• Photocopy image and insert into opening to check the size
• You may need to stitch additional rows, only so your design fits within the opening
• Trim canvas within 1 or 2 rows of design
• With scissors, score protective covering, and peel away to expose sticky area
• Center canvas and press down, from the center to the edge
• Tuck canvas under leather, using a flat blunt instrument 
• Watch Needlepoint.com's self finishing tutorial videos for more help