BIRKENSTOCK Callan Natural Leather Vintage Wood Black 。The Birkenstock Callan Vintage Wood Black Leather Slip-On shoes are a comfortable and versatile option for men in size 10. These casual shoes feature a solid pattern, round toe shape, and low heel height, making them perfect for everyday wear. Crafted with natural leather, these shoes are designed for all seasons and provide a comfortable fit for extended wear. Whether you\'re looking for a stylish option for the office or a durable choice for outdoor activities, these Birkenstock Callan shoes are a classic choice with a touch of vintage flair.