PERFECT FIT: We've specifically designed the case to fit your Sennheiser Consumer Audio HD 400S / 450BT / 350BT / 450SE Around Ear Headphone. OUTER DIMENSIONS: 8" L – 6" W – 4" H. SAFE: Hard quality EVA material is Semi-waterproof, Shockproof and Durable to protect your Sennheiser Consumer Audio HD 400S / 450BT / 350BT / 450SE Around Ear Headphone from impacts and splashes. TRAVEL PARTNER: This hard case for Sennheiser Consumer Audio HD 400S / 450BT / 350BT / 450SE Around Ear Headphone is lightweight and compact to fit in your backpack, carry-on or luggage for improved traveling protection. CONVENIENT DESIGN: Inner Mesh pocket design perfectly for accessories, Smooth but strong 360 degree zipper for easy Opening and Closing. Notice: One case ( The Sennheiser Consumer Audio HD 400S / 450BT / 350BT / 450SE Around Ear Headphone is not included ). Headphone Case Compatible with Sennheiser Consumer Audio HD 400S / 450BT / 350BT / 450SE Around Ear Headphone, Case Only