Compatible with the following headphones(including but not limited): Jabra: Jabra PRO Series: 920, 930, 935, 9450, 9460, 9465, 9470, 9400BS. Jabra GN Series: GN1900, GN2000, GN2025, GN2100, GN9120, GN9125. Jabra BIZ Series: BIZ 620, BIZ 1100, BIZ 1500, BIZ 1900, BIZ 2300, BIZ 2400II. Jabra UC Voice: 550 MS, 750 MS, 550A. Jabra Evolve: 20, 30, 40, 65, 75, Evolve2 65 Flex. Jabra Engage: 50, 50 II Wired, 55, 65, 75. Plantronics: Plantronics CS Series: CS510, CS510-XD, CS520-XD. Plantronics SP Series: SP7, SP8, SP11, SP11-A, SP11-C, SP12. Plantronics HW Series: Supra Plus Encore HW111N, HW291N, HW510, HW510V, HW520, HW520V, HW251N, HW261N, HW710, HW720. Plantronics Blackwire: 3310-A, 3310M-A, 3315-A, 3315M-A, 3310-C, 3310M-C,3315-C, 3315M-C, 3320-A, 3320M-A, 3325-A, 3325M-A, 3320-C, 3320M-C,3325-C, 3325M-C, C215, C225, C310, C320, C3210, C3210 USB-C, C3220, C3220 USB-C, C3215, C3215 USB-C, C3225, C3225 USB-C. Plantronics EncorePro310/320 Series, Plantronics EP310/320. Plantronics: H251, H251N, H261, H261N, H351, H351N, H361, H361N, H51, H51N, H61, H61N, H91, H91N, H101, H101N. Poly Voyager: 4210, 4310, 4320, Focus, Focus 2. Plantronics Savi: 8200 Series, 8210, 8220, 7210, 7220, W710, W720. Yealink: BH70, WH62, UH36, YHS33 Series. Logitech: H390. The headphone case can be stretched for various sized office computer headsets within this size range: 8.3*7.2*0.9inches(21*18.3*2.4cm). Please check the sizes of your headphones and our bag before purchasing, and for other headphones, please consult us for Compatibility Guide. Smooth Zipper Closure The zipper closure of the headphone case is smooth and secure, offering quick and easy access to your headphones. Soft Neoprene Fabric The headset bag provides the necessary padding for scratches, water and minor impacts, making it perfect for travel. Steady hand strap The headphone storage bag’s decent carrying strap makes it convenient to loop it around your wrist when carrying.