1. Nicgid Sling Bag Backpack Crossbody Bags For Ipad Tablet Outdoor Hiking(Army green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
Material - lightweight,high quality and water-resistant nylon material.Strap and the back are padded, comfortable to wear carry-on.Dimension - Size:8.3*3.9*11.8 inch (L*W*H). It is can used as a chest pack, shoulder bag, messenger bag ,travel bag. Fit both regular and plus-size person.

2. G4Free Outdoor Tactical Backpack,Military Sport Pack Shoulder Backpack for Camping, Hiking, Trekking,Rover Sling Pack Chest Pack(ACU Camouflage) (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
Handy, versatile 3 ways carrying style (Shoulder Bag, Chest Sling - Back Sling, Hand Carry) ,small MOLLE pouch.Small, compact, goes anywhere design is perfect where large packs are too big, too bulky, too heavy.

3. DDDH 13.3-Inch Sling Bag Riding Hiking Bag Single Shoulder Backpack For Men Women(Army green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
★High quality nylon material,fashion,multi-function and practical design are comfortable to wear.★Size:11.8*5.2*15.7inch(L*W*H).With a long crossbody adjustable strap can be used as a messenger,chest bag or shoulder backpack.(We also have bigger one,fit 15.6 inch laptop)

4. DDDH Sling Bag Shoulder Backpack Chest Pack Military Crossbody Bags For Man Women(Army green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
High quality nylon material,fashion, multi-function and practical design are comfortable to wearDimensions: 22*12*27cm/ 8.7*4.7*10.6inch(L*W*H). With a crossbody adjustable strap and can be used as shoulder, messenger or chest bag.

5. Nicgid Sling Bag Chest Shoulder Backpack Fanny Pack Crossbody Bags for Men(Army green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
HIGH QUALITY: It's made of high quality water-resistant and rip-resistant nylon.UNBALANCE BACKPACK WEARING STYLES: It has great flexibility. You can use it both as chest pack and shoulder bag. Also it can be worn in the front or back of body.