有好几个款式可以选，这个牌子的双肩包都挺不错的 https://www.rei.com/b/camelbak/c/all 推荐这款，很轻便耐用，容量也大，现在价格也不错，打折60% off https://www.rei.com/product/249665/camelbak-mule-pro-14-hydration-pack-womens 还有这款也不错，也好背，款式也好看，打折50% off https://www.rei.com/product/249657/camelbak-hawg-pro-20-hydration-pack
推荐这款，很轻便耐用，容量也大，现在价格也不错，打折60% off https://www.rei.com/product/249665/camelbak-mule-pro-14-hydration-pack-womens
还有这款也不错，也好背，款式也好看，打折50% off https://www.rei.com/product/249657/camelbak-hawg-pro-20-hydration-pack