This blue heat shrink sleeve is designed to contract uniformly when heat is applied, providing a tight and secure cover. With a shrink ratio of 2/1, this heat shrink will perfectly fit your batteries, providing additional protection against moisture, dust, and mechanical damage. Translation to HTML: <p>This blue heat shrink sleeve is designed to contract uniformly when heat is applied, providing a tight and secure cover. With a shrink ratio of 2/1, this heat shrink will perfectly fit your batteries, providing additional protection against moisture, dust, and mechanical damage.</p>