Jennifer Garner looked warm and comfy as she walked with her son Samuel on Friday.The Peppermint star appeared to be make-up free, and sported a casual look, wearing faded ankle jeans, a gray hoodie, blue sneakers and black framed glasses for the morning drop off.Samuel, Garner's son with ex-husband Ben Affleck, looked down as he leaned on his mom and holding her hand as they walked along the sidewalk in Los Angeles. The end of a busy week: Jennifer Garner walks her son to school Friday after a busy week promoting a film and raising money for charityThe 10-year-old wore khakis, a green camo hoodie with rainbow stripes and a grey beanie with a smiley face.The mom of three carried a reusable coffee cup and car keys in her manicured hands.