will i get the same bicep results by lifting this instead of dumbbells ?

i wont have any real weights until christmas, so instead, ive been putting 4 textbooks in my laptop case. it weighs 16.1 pounds. will i still get the same results? ive been lifting this since a week and a half ago, except now its 5 more pounds.

You may not get the exact same results, but something is better than nothing. Sometimes you just have to improvise, ive done it plenty of times and found out that something really is better than nothing.

Review: Perfora Leather Style Laptop Case (by Proporta)