Extra wide side seals, 36 lbs. high wet strength medical grade paper and five-ply blue poly film protect sterile contents. Industry leading 7/8%XE2%X80? self-seal adhesive strip gives users Triple Action Seal™: tape to paper, tape to film and tape to tape. Thumb notch and generous knuckle roll area for easy opening. Quick release tape and dry edge enables handling with gloves. Adhesive strip with perforated fold gives complete seal. Clear consistent color change reinforces verification process.