Sound Huggle is the world's coziest hi-fidelity wireless headphone earmuffs, offering excellent full-range performance with deep, punchy bass, balanced mid-range, and crisp, non-piercing highs. Talk hands free using the built-in microphone, with no more tangled cords, and enjoy a world-class listening experience while you're braving the elements. • Premium Sound Quality with Bluetooth Connectivity • Collapsible & Portable & Ruggedly Durable • Micro-Thermal Design for Ultimate Comfort • Versatile and Comfortable, One Size Fits All • Works around Bike/Ski/Snowboard Helmets After one too many commutes in Chicago and New York and experiencing earaches and freezing ears, we decided to come up with a solution. And that's why we created Sound Huggle: The World's Coziest Hi-Fidelity Headphones Our patented headphones are built to be the world’s most comfortable, durable headphones that deliver premium studio sound quality. Unlock your next bold adventure with these premium bluetooth headphone earmuffs that make cold listening possible! Warmth Protection & Comfort without Painful Ears: Our patented design with stainless steel springs maintains the longevity and shape of the headband from long-term wear and tear. We designed a one-size fits all headband to extend and adjust for maximum comfort, while providing the warmth, comfort, and cushion of traditional earmuffs without the feeling of electronic components pushing against your ears. Durability in Sub-zero Temperatures: Sound Huggles are durable, pliable and will work in extreme temperatures down to -5C or 23F. We tested multiple types of materials, eventually landing on Polyoxymethylene or POM-a engineered thermoplastic that is specially formulated to withstand cold and heavy usage from bending and flexing. Conventional headbands around headphones and earmuffs use Polystyrene or PS plastic, which is cheap, brittle, and can easily be broken and snapped. Hi-fi Sound: Imagine closing your eyes, as crisp vocals, warm mids, and clean bass are acoustically delivered without distortion at high volume. We're confident that this hi-fidelity sound will appeal to hip-hop lovers, EDM fans, and classical music connoisseurs alike. Speaker Size: 1.6 in. +/- 0.01 in. x 0.3 in. +/- 0.01 in.Impedance: 32 ohms (at 1kHz) +/- 15%Speaker Frequency Range: 20-20 kHzInput Sound Level 115 db +/- 3dB Collapsibility: We wanted to make your Sound Huggle earmuffs convenient for you to stash away into your pocket or purse when you’re not using them, so we added this collapsible design for easy foldability and portability. Minimalist Design: We understood that for people to wear Sound Huggles, it had to look good, too, so we focused on minimalist design, by discreetly hiding the power buttons and volume controls. Your earmuffs accessorizes and complements your outfit, without anyone knowing it’s hiding a beautiful piece of technology behind the covers.