Woot! has Panasonic ErgoFit True Wireless Bluetooth Active Noise Canceling Earbuds (Black, RZ-B310W) for $34.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Features:

• Panasonic ErgoFit Earbuds, Now Wireless for More Freedom: Enjoy noise cancelling, smooth bass, and great fit for less; lightweight bluetooth wireless earbuds have a secure Ergofit design and 3 earpiece sizes to customize your fit
• The B310W TWS ear buds have active noise cancellation to eliminate background noise- perfect while traveling travel on planes, trains, and buses
• Immerse yourself in powerful bass energy from the earbuds' 10mm dynamic drivers and XBS (extra bass system)
• Switch between calls and music, select functions like activate noise cancellation, or skip tracks with easy touch controls on both earphones; or use voice controls when you want; compatible with Google Assistant and Siri too
• Keep listening without interruption, with up to 5 hours of playback on a single charge (with noise cancellation on) and up to 16 hours with the charging case (26 total hours with NC off)
• Note: If the size of the earpiece does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earpieces to ones that fit more snugly in your ear