Ilse Jacobsen Tulip 139 The On-The-Go Slip-On in Blue. Flexible and easy to wear, you’ll enjoy your daily walks or errands with these slip-ons on your feet. Flexible rubber soles, water resistant man-made perforated uppers and soft microfiber lining. Padded, removable insole. Breathable, practical and comfort all in one. Size 37. Great pre-owned condition with normal wear noted on the insoles and soles. Please see all photos and ask for more information if needed.