Infrared Sleep Socks | Merino Wool | Clinically Proven Sleep Support

The Sleep Sock Backed by Clinical Research

Accapi Infrared Sleep Socks are the only infrared sleep socks with published clinical evidence — studied in a peer-reviewed trial and shown to significantly reduce insomnia severity and increase slow-wave sleep after just two weeks of nightly use. Made with merino wool and Accapi's proprietary infrared-emitting fiber, these socks work with your body's natural thermoregulation to help you fall asleep faster, sleep more deeply, and wake feeling genuinely restored.

Clinically Studied — Published Results A peer-reviewed study published in the Journal of Sports Medicine and Physical Fitness (2025) found that after two weeks of wearing Accapi infrared sleep socks:

• Insomnia severity scores reduced significantly
• Slow-wave sleep — the deepest, most restorative sleep stage — increased significantly
• 60% of participants reported no insomnia (vs 26.6% before)
• More than 8 out of 10 participants would recommend them for improving sleep

Why Foot Warmth Matters for Sleep Restful sleep depends on your body's ability to regulate its core temperature. As your feet warm, vasodilation occurs — your body dissipates heat and triggers melatonin production, the hormone that governs your sleep-wake cycle. Accapi's infrared fiber maintains foot warmth throughout the night, sustaining the thermoregulatory conditions that promote deeper, less fragmented sleep — something a warm foot bath before bed cannot do.

Merino Wool — Nature's Best Sleep Fiber Merino wool is naturally hygroscopic, absorbing and managing moisture throughout the night to keep feet dry and comfortable. Its natural temperature-regulating properties make it the ideal base for a sleep sock — enhanced further by Accapi's infrared fiber for superior circulation and thermoregulation.

Accapi Infrared Fiber — Enhanced Circulation & Thermoregulation Accapi's infrared-emitting fiber works continuously to enhance peripheral circulation and support the body's natural thermoregulation — helping maintain the foot temperature conditions that promote slow-wave sleep and reduce nighttime awakenings.

No compression. No medication. No effort. Just put them on and sleep better.

Key Features:

• Clinically studied — published in Journal of Sports Medicine & Physical Fitness (2025)
• Reduces insomnia severity — significant reduction in ISI scores
• Increases slow-wave sleep — the most restorative sleep stage
• Merino wool for natural moisture management & temperature regulation
• Accapi infrared fiber for enhanced circulation & thermoregulation
• No compression — comfortable all night
• Unisex
• Made in Italy

69% Merino Wool, 20% Polyamide, 6% Silicone, 4% Polyester, 1% Elastane | Made in Italy