This is an option without a round carabiner. This is a heater cover for Marukan's companion heater♪ This will keep you worry-free in winter! Heater cover to prevent mischief & protect your precious pet from burns Made of anti-pill fabric, it's resistant to chewing and extremely durable! Maintains a moderate warmth It doesn't let heat escape too much, trapping a comfortable warmth inside. Prevents chewing & mischief Hides the heater body and cord with durable material, preventing electric shock and damage to the heater. Prevents burns Prevents pets from directly touching the heater, reducing the risk of low-temperature burns Easy to clean Anti-pill fabric makes it difficult for dirt to stick It can be washed and removes loose hair, making it hygienic. For the fittings, Please choose either compact fittings or stainless steel eyelets and let us know in the transaction after purchase ❤︎